64345672 has 16 divisors (see below), whose sum is σ = 120823740. Its totient is φ = 32126016.

The previous prime is 64345639. The next prime is 64345691. The reversal of 64345672 is 27654346.

It can be written as a sum of positive squares in 2 ways, for example, as 56761156 + 7584516 = 7534^2 + 2754^2 .

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, 378 + ... + 11350.

Almost surely, 2^64345672 is an apocalyptic number.

It is an amenable number.

64345672 is a deficient number, since it is larger than the sum of its proper divisors (56478068).

64345672 is a wasteful number, since it uses less digits than its factorization.

64345672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11712 (or 11708 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 64345672 is about 8021.5754063650. The cubic root of 64345672 is about 400.7188573364.

The spelling of 64345672 in words is "sixty-four million, three hundred forty-five thousand, six hundred seventy-two".