73664157 has 8 divisors (see below), whose sum is σ = 112250176. Its totient is φ = 42093792.

The previous prime is 73664141. The next prime is 73664161. The reversal of 73664157 is 75146637.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73664157 - 2⁴ = 73664141 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 (73664137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753888 + ... + 1753929.

It is an arithmetic number, because the mean of its divisors is an integer number (14031272).

Almost surely, 2^73664157 is an apocalyptic number.

It is an amenable number.

73664157 is a deficient number, since it is larger than the sum of its proper divisors (38586019).

73664157 is a wasteful number, since it uses less digits than its factorization.

73664157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507827.

The product of its digits is 105840, while the sum is 39.

The square root of 73664157 is about 8582.7825907453. The cubic root of 73664157 is about 419.1975551405.

The spelling of 73664157 in words is "seventy-three million, six hundred sixty-four thousand, one hundred fifty-seven".