73664159 has 4 divisors (see below), whose sum is σ = 77541240. Its totient is φ = 69787080.

The previous prime is 73664141. The next prime is 73664161. The reversal of 73664159 is 95146637.

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 73664159 - 2⁸ = 73663903 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 (73664119) 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, 1938512 + ... + 1938549.

It is an arithmetic number, because the mean of its divisors is an integer number (19385310).

Almost surely, 2^73664159 is an apocalyptic number.

73664159 is a deficient number, since it is larger than the sum of its proper divisors (3877081).

73664159 is a wasteful number, since it uses less digits than its factorization.

73664159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877080.

The product of its digits is 136080, while the sum is 41.

The square root of 73664159 is about 8582.7827072576. The cubic root of 73664159 is about 419.1975589342.

The spelling of 73664159 in words is "seventy-three million, six hundred sixty-four thousand, one hundred fifty-nine".