64473120 has 72 divisors (see below), whose sum is σ = 220019436. Its totient is φ = 17192448.

The previous prime is 64473109. The next prime is 64473133. The reversal of 64473120 is 2137446.

64473120 is a `hidden beast` number, since 644 + 7 + 3 + 12 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64448784 + 24336 = 8028^2 + 156^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20947 + ... + 23826.

Almost surely, 2^64473120 is an apocalyptic number.

64473120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64473120 is an abundant number, since it is smaller than the sum of its proper divisors (155546316).

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

64473120 is a wasteful number, since it uses less digits than its factorization.

64473120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44794 (or 44783 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 64473120 is about 8029.5155520118. The cubic root of 64473120 is about 400.9832477460.

The spelling of 64473120 in words is "sixty-four million, four hundred seventy-three thousand, one hundred twenty".