64642104 has 96 divisors (see below), whose sum is σ = 189738000. Its totient is φ = 20388672.

The previous prime is 64642057. The next prime is 64642133. The reversal of 64642104 is 40124646.

64642104 is a `hidden beast` number, since 6 + 4 + 642 + 10 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 77562 + ... + 78390.

Almost surely, 2^64642104 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 64642104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94869000).

64642104 is an abundant number, since it is smaller than the sum of its proper divisors (125095896).

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

64642104 is a wasteful number, since it uses less digits than its factorization.

64642104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64642104 is about 8040.0313432225. The cubic root of 64642104 is about 401.3332677221. Note that the first 3 decimals are identical.

It can be divided in two parts, 64642 and 104, that added together give a palindrome (64746).

The spelling of 64642104 in words is "sixty-four million, six hundred forty-two thousand, one hundred four".