64785967 has 4 divisors (see below), whose sum is σ = 65673520. Its totient is φ = 63898416.

The previous prime is 64785947. The next prime is 64785983. The reversal of 64785967 is 76958746.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64785967 - 2¹¹ = 64783919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64785937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443667 + ... + 443812.

It is an arithmetic number, because the mean of its divisors is an integer number (16418380).

Almost surely, 2^64785967 is an apocalyptic number.

64785967 is a deficient number, since it is larger than the sum of its proper divisors (887553).

64785967 is an equidigital number, since it uses as much as digits as its factorization.

64785967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887552.

The product of its digits is 2540160, while the sum is 52.

The square root of 64785967 is about 8048.9730400841. The cubic root of 64785967 is about 401.6307736579.

The spelling of 64785967 in words is "sixty-four million, seven hundred eighty-five thousand, nine hundred sixty-seven".