73993137 has 4 divisors (see below), whose sum is σ = 98657520. Its totient is φ = 49328756.

The previous prime is 73993133. The next prime is 73993159. The reversal of 73993137 is 73139937.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73993137 - 2² = 73993133 is a prime.

It is a super-3 number, since 3×73993137³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (73993133) 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, 12332187 + ... + 12332192.

It is an arithmetic number, because the mean of its divisors is an integer number (24664380).

Almost surely, 2^73993137 is an apocalyptic number.

It is an amenable number.

73993137 is a deficient number, since it is larger than the sum of its proper divisors (24664383).

73993137 is a wasteful number, since it uses less digits than its factorization.

73993137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24664382.

The product of its digits is 107163, while the sum is 42.

The square root of 73993137 is about 8601.9263540209. The cubic root of 73993137 is about 419.8206660683.

The spelling of 73993137 in words is "seventy-three million, nine hundred ninety-three thousand, one hundred thirty-seven".