649910598 has 32 divisors (see below), whose sum is σ = 1374492672. Its totient is φ = 204532800.

The previous prime is 649910537. The next prime is 649910603. The reversal of 649910598 is 895019946.

It is a self number, because there is not a number n which added to its sum of digits gives 649910598.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34986 + ... + 50237.

It is an arithmetic number, because the mean of its divisors is an integer number (42952896).

Almost surely, 2^649910598 is an apocalyptic number.

649910598 is an abundant number, since it is smaller than the sum of its proper divisors (724582074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649910598 is a wasteful number, since it uses less digits than its factorization.

649910598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85300.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 649910598 is about 25493.3441901999. The cubic root of 649910598 is about 866.1993889002.

The spelling of 649910598 in words is "six hundred forty-nine million, nine hundred ten thousand, five hundred ninety-eight".