64712380 has 48 divisors (see below), whose sum is σ = 139436640. Its totient is φ = 25219328.

The previous prime is 64712341. The next prime is 64712381. The reversal of 64712380 is 8321746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64712381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203982 + ... + 204298.

It is an arithmetic number, because the mean of its divisors is an integer number (2904930).

Almost surely, 2^64712380 is an apocalyptic number.

It is an amenable number.

64712380 is an abundant number, since it is smaller than the sum of its proper divisors (74724260).

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

64712380 is a wasteful number, since it uses less digits than its factorization.

64712380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 64712380 is about 8044.4005370195. The cubic root of 64712380 is about 401.4786522336.

The spelling of 64712380 in words is "sixty-four million, seven hundred twelve thousand, three hundred eighty".