73756731 has 4 divisors (see below), whose sum is σ = 98342312. Its totient is φ = 49171152.

The previous prime is 73756729. The next prime is 73756759. The reversal of 73756731 is 13765737.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 73756731 - 2¹ = 73756729 is a prime.

It is a super-2 number, since 2×73756731² = 10880110735612722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73756731.

It is not an unprimeable number, because it can be changed into a prime (73756721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12292786 + ... + 12292791.

It is an arithmetic number, because the mean of its divisors is an integer number (24585578).

Almost surely, 2^73756731 is an apocalyptic number.

73756731 is a deficient number, since it is larger than the sum of its proper divisors (24585581).

73756731 is a wasteful number, since it uses less digits than its factorization.

73756731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24585580.

The product of its digits is 92610, while the sum is 39.

The square root of 73756731 is about 8588.1739036887. The cubic root of 73756731 is about 419.3730839692.

The spelling of 73756731 in words is "seventy-three million, seven hundred fifty-six thousand, seven hundred thirty-one".