64888704 has 192 divisors, whose sum is σ = 203673600. Its totient is φ = 19768320.

The previous prime is 64888697. The next prime is 64888729. The reversal of 64888704 is 40788846.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64888704.

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, 821337 + ... + 821415.

It is an arithmetic number, because the mean of its divisors is an integer number (1060800).

Almost surely, 2^64888704 is an apocalyptic number.

64888704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64888704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101836800).

64888704 is an abundant number, since it is smaller than the sum of its proper divisors (138784896).

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

64888704 is a wasteful number, since it uses less digits than its factorization.

64888704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 64888704 is about 8055.3525062532. The cubic root of 64888704 is about 401.8429623502.

The spelling of 64888704 in words is "sixty-four million, eight hundred eighty-eight thousand, seven hundred four".