64708667 has 4 divisors (see below), whose sum is σ = 65674536. Its totient is φ = 63742800.

The previous prime is 64708639. The next prime is 64708669. The reversal of 64708667 is 76680746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76680746 = 2 ⋅38340373.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64708667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64708669) 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, 482834 + ... + 482967.

It is an arithmetic number, because the mean of its divisors is an integer number (16418634).

Almost surely, 2^64708667 is an apocalyptic number.

64708667 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

64708667 is a deficient number, since it is larger than the sum of its proper divisors (965869).

64708667 is an equidigital number, since it uses as much as digits as its factorization.

64708667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965868.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 64708667 is about 8044.1697520627. The cubic root of 64708667 is about 401.4709735445.

The spelling of 64708667 in words is "sixty-four million, seven hundred eight thousand, six hundred sixty-seven".