64985004 has 72 divisors (see below), whose sum is σ = 194707968. Its totient is φ = 18565200.

The previous prime is 64984993. The next prime is 64985017. The reversal of 64985004 is 40058946.

64985004 is a `hidden beast` number, since 64 + 98 + 500 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 64985004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2029 + ... + 11579.

Almost surely, 2^64985004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64985004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97353984).

64985004 is an abundant number, since it is smaller than the sum of its proper divisors (129722964).

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

64985004 is a wasteful number, since it uses less digits than its factorization.

64985004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9577 (or 9563 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 64985004 is about 8061.3276822122. The cubic root of 64985004 is about 402.0416530687.

The spelling of 64985004 in words is "sixty-four million, nine hundred eighty-five thousand, four".