64972835 has 8 divisors (see below), whose sum is σ = 78265440. Its totient is φ = 51779584.

The previous prime is 64972811. The next prime is 64972849. The reversal of 64972835 is 53827946.

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

It is a cyclic number.

It is not a de Polignac number, because 64972835 - 2⁶ = 64972771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23390 + ... + 26019.

It is an arithmetic number, because the mean of its divisors is an integer number (9783180).

Almost surely, 2^64972835 is an apocalyptic number.

64972835 is a deficient number, since it is larger than the sum of its proper divisors (13292605).

64972835 is a wasteful number, since it uses less digits than its factorization.

64972835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49677.

The product of its digits is 362880, while the sum is 44.

The square root of 64972835 is about 8060.5728704603. The cubic root of 64972835 is about 402.0165562515.

The spelling of 64972835 in words is "sixty-four million, nine hundred seventy-two thousand, eight hundred thirty-five".