93640731 has 8 divisors (see below), whose sum is σ = 124948560. Its totient is φ = 62380032.

The previous prime is 93640717. The next prime is 93640817. The reversal of 93640731 is 13704639.

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

It is not a de Polignac number, because 93640731 - 2¹¹ = 93638683 is a prime.

It is a super-2 number, since 2×93640731² = 17537173004428722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 93640692 and 93640701.

It is not an unprimeable number, because it can be changed into a prime (93640711) 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 7 ways as a sum of consecutive naturals, for example, 6850 + ... + 15303.

It is an arithmetic number, because the mean of its divisors is an integer number (15618570).

Almost surely, 2^93640731 is an apocalyptic number.

93640731 is a deficient number, since it is larger than the sum of its proper divisors (31307829).

93640731 is a wasteful number, since it uses less digits than its factorization.

93640731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23565.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 93640731 is about 9676.8140934917. The cubic root of 93640731 is about 454.1035863049.

The spelling of 93640731 in words is "ninety-three million, six hundred forty thousand, seven hundred thirty-one".