64972706 has 8 divisors (see below), whose sum is σ = 99532800. Its totient is φ = 31795108.

The previous prime is 64972679. The next prime is 64972711. The reversal of 64972706 is 60727946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345506 + ... + 345693.

It is an arithmetic number, because the mean of its divisors is an integer number (12441600).

Almost surely, 2^64972706 is an apocalyptic number.

64972706 is a deficient number, since it is larger than the sum of its proper divisors (34560094).

64972706 is a wasteful number, since it uses less digits than its factorization.

64972706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691248.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 64972706 is about 8060.5648685436. The cubic root of 64972706 is about 402.0162901908.

The spelling of 64972706 in words is "sixty-four million, nine hundred seventy-two thousand, seven hundred six".