64481004 has 36 divisors (see below), whose sum is σ = 186279184. Its totient is φ = 18423072.

The previous prime is 64480979. The next prime is 64481009. The reversal of 64481004 is 40018446.

64481004 is a `hidden beast` number, since 644 + 8 + 10 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (64481009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127687 + ... + 128190.

Almost surely, 2^64481004 is an apocalyptic number.

It is an amenable number.

64481004 is an abundant number, since it is smaller than the sum of its proper divisors (121798180).

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

64481004 is a wasteful number, since it uses less digits than its factorization.

64481004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255894 (or 255889 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 64481004 is about 8030.0064757135. The cubic root of 64481004 is about 400.9995916273. Note that the first 3 decimals are identical.

The spelling of 64481004 in words is "sixty-four million, four hundred eighty-one thousand, four".