649363585 has 8 divisors (see below), whose sum is σ = 839177640. Its totient is φ = 479529984.

The previous prime is 649363553. The next prime is 649363591. The reversal of 649363585 is 585363946.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47004736 + 602358849 = 6856^2 + 24543^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 649363585 - 2⁵ = 649363553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4995040 + ... + 4995169.

It is an arithmetic number, because the mean of its divisors is an integer number (104897205).

Almost surely, 2^649363585 is an apocalyptic number.

649363585 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

649363585 is a deficient number, since it is larger than the sum of its proper divisors (189814055).

649363585 is a wasteful number, since it uses less digits than its factorization.

649363585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9990227.

The product of its digits is 2332800, while the sum is 49.

The square root of 649363585 is about 25482.6133863856. The cubic root of 649363585 is about 865.9563014537.

The spelling of 649363585 in words is "six hundred forty-nine million, three hundred sixty-three thousand, five hundred eighty-five".