64701667 has 4 divisors (see below), whose sum is σ = 64789960. Its totient is φ = 64613376.

The previous prime is 64701629. The next prime is 64701671. The reversal of 64701667 is 76610746.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64701667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64701617) 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, 43038 + ... + 44515.

It is an arithmetic number, because the mean of its divisors is an integer number (16197490).

Almost surely, 2^64701667 is an apocalyptic number.

64701667 is a deficient number, since it is larger than the sum of its proper divisors (88293).

64701667 is an equidigital number, since it uses as much as digits as its factorization.

64701667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88292.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 64701667 is about 8043.7346425650. The cubic root of 64701667 is about 401.4564963588.

The spelling of 64701667 in words is "sixty-four million, seven hundred one thousand, six hundred sixty-seven".