649150785 has 12 divisors (see below), whose sum is σ = 1125194772. Its totient is φ = 346213728.

The previous prime is 649150783. The next prime is 649150813. The reversal of 649150785 is 587051946.

649150785 is a `hidden beast` number, since 64 + 9 + 1 + 507 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 416527281 + 232623504 = 20409^2 + 15252^2 .

It is not a de Polignac number, because 649150785 - 2¹ = 649150783 is a prime.

It is a super-2 number, since 2×649150785² = 842793483332232450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 14425573 = 649150785 / (6 + 4 + 9 + 1 + 5 + 0 + 7 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 649150785.

It is not an unprimeable number, because it can be changed into a prime (649150783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7212742 + ... + 7212831.

It is an arithmetic number, because the mean of its divisors is an integer number (93766231).

Almost surely, 2^649150785 is an apocalyptic number.

It is an amenable number.

649150785 is a deficient number, since it is larger than the sum of its proper divisors (476043987).

649150785 is a wasteful number, since it uses less digits than its factorization.

649150785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14425584 (or 14425581 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 649150785 is about 25478.4376483331. The cubic root of 649150785 is about 865.8616982462.

The spelling of 649150785 in words is "six hundred forty-nine million, one hundred fifty thousand, seven hundred eighty-five".