64712320 has 32 divisors (see below), whose sum is σ = 154704420. Its totient is φ = 25884672.

The previous prime is 64712303. The next prime is 64712341. The reversal of 64712320 is 2321746.

It can be written as a sum of positive squares in 2 ways, for example, as 54523456 + 10188864 = 7384^2 + 3192^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 49917 + ... + 51196.

Almost surely, 2^64712320 is an apocalyptic number.

It is an amenable number.

64712320 is an abundant number, since it is smaller than the sum of its proper divisors (89992100).

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

64712320 is a wasteful number, since it uses less digits than its factorization.

64712320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101132 (or 101120 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 64712320 is about 8044.3968077165. The cubic root of 64712320 is about 401.4785281527.

The spelling of 64712320 in words is "sixty-four million, seven hundred twelve thousand, three hundred twenty".