64472620 has 12 divisors (see below), whose sum is σ = 135392544. Its totient is φ = 25789040.

The previous prime is 64472587. The next prime is 64472633. The reversal of 64472620 is 2627446.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611796 + ... + 1611835.

It is an arithmetic number, because the mean of its divisors is an integer number (11282712).

Almost surely, 2^64472620 is an apocalyptic number.

It is an amenable number.

64472620 is an abundant number, since it is smaller than the sum of its proper divisors (70919924).

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

64472620 is a wasteful number, since it uses less digits than its factorization.

64472620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223640 (or 3223638 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 64472620 is about 8029.4844168228. The cubic root of 64472620 is about 400.9822111789.

The spelling of 64472620 in words is "sixty-four million, four hundred seventy-two thousand, six hundred twenty".