64955904 has 80 divisors (see below), whose sum is σ = 186415152. Its totient is φ = 19980288.

The previous prime is 64955893. The next prime is 64955921. The reversal of 64955904 is 40955946.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18342 + ... + 21594.

Almost surely, 2^64955904 is an apocalyptic number.

64955904 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 64955904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93207576).

64955904 is an abundant number, since it is smaller than the sum of its proper divisors (121459248).

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

64955904 is a wasteful number, since it uses less digits than its factorization.

64955904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287 (or 3271 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 64955904 is about 8059.5225665048. The cubic root of 64955904 is about 401.9816332788.

Adding to 64955904 its sum of digits (42), we get a palindrome (64955946).

The spelling of 64955904 in words is "sixty-four million, nine hundred fifty-five thousand, nine hundred four".