649885059 has 32 divisors (see below), whose sum is σ = 993888000. Its totient is φ = 419487552.

The previous prime is 649885051. The next prime is 649885087. The reversal of 649885059 is 950588946.

It is a happy number.

It is not a de Polignac number, because 649885059 - 2³ = 649885051 is a prime.

It is a super-2 number, since 2×649885059² = 844701179822866962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 649884996 and 649885014.

It is not an unprimeable number, because it can be changed into a prime (649885051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103687 + ... + 109775.

It is an arithmetic number, because the mean of its divisors is an integer number (31059000).

Almost surely, 2^649885059 is an apocalyptic number.

649885059 is a deficient number, since it is larger than the sum of its proper divisors (344002941).

649885059 is a wasteful number, since it uses less digits than its factorization.

649885059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224 (or 6218 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The square root of 649885059 is about 25492.8432898333. The cubic root of 649885059 is about 866.1880426443.

The spelling of 649885059 in words is "six hundred forty-nine million, eight hundred eighty-five thousand, fifty-nine".