73664895 has 16 divisors (see below), whose sum is σ = 117970272. Its totient is φ = 39252480.

The previous prime is 73664887. The next prime is 73664909. The reversal of 73664895 is 59846637.

It is not a de Polignac number, because 73664895 - 2³ = 73664887 is a prime.

It is a super-2 number, since 2×73664895² = 10853033510722050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31155 + ... + 33435.

It is an arithmetic number, because the mean of its divisors is an integer number (7373142).

Almost surely, 2^73664895 is an apocalyptic number.

73664895 is a deficient number, since it is larger than the sum of its proper divisors (44305377).

73664895 is a wasteful number, since it uses less digits than its factorization.

73664895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442.

The product of its digits is 1088640, while the sum is 48.

The square root of 73664895 is about 8582.8255836875. The cubic root of 73664895 is about 419.1989550378.

The spelling of 73664895 in words is "seventy-three million, six hundred sixty-four thousand, eight hundred ninety-five".