64654998 has 32 divisors (see below), whose sum is σ = 132155232. Its totient is φ = 21081600.

The previous prime is 64654987. The next prime is 64655011. The reversal of 64654998 is 89945646.

It is a self number, because there is not a number n which added to its sum of digits gives 64654998.

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, 87840 + ... + 88572.

It is an arithmetic number, because the mean of its divisors is an integer number (4129851).

Almost surely, 2^64654998 is an apocalyptic number.

64654998 is an abundant number, since it is smaller than the sum of its proper divisors (67500234).

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

64654998 is a wasteful number, since it uses less digits than its factorization.

64654998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 1866240, while the sum is 51.

The square root of 64654998 is about 8040.8331657857. The cubic root of 64654998 is about 401.3599502649.

The spelling of 64654998 in words is "sixty-four million, six hundred fifty-four thousand, nine hundred ninety-eight".