75664307 has 4 divisors (see below), whose sum is σ = 75906360. Its totient is φ = 75422256.

The previous prime is 75664279. The next prime is 75664349. The reversal of 75664307 is 70346657.

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 75664307 - 2⁶ = 75664243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75664357) 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, 120557 + ... + 121182.

It is an arithmetic number, because the mean of its divisors is an integer number (18976590).

Almost surely, 2^75664307 is an apocalyptic number.

75664307 is a deficient number, since it is larger than the sum of its proper divisors (242053).

75664307 is a wasteful number, since it uses less digits than its factorization.

75664307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242052.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 75664307 is about 8698.5232654744. The cubic root of 75664307 is about 422.9577816494.

The spelling of 75664307 in words is "seventy-five million, six hundred sixty-four thousand, three hundred seven".