89731651 has 2 divisors, whose sum is σ = 89731652. Its totient is φ = 89731650.

The previous prime is 89731619. The next prime is 89731711. The reversal of 89731651 is 15613798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89731651 - 2⁵ = 89731619 is a prime.

It is not a weakly prime, because it can be changed into another prime (89731351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44865825 + 44865826.

It is an arithmetic number, because the mean of its divisors is an integer number (44865826).

Almost surely, 2^89731651 is an apocalyptic number.

89731651 is a deficient number, since it is larger than the sum of its proper divisors (1).

89731651 is an equidigital number, since it uses as much as digits as its factorization.

89731651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 89731651 is about 9472.6791880650. The cubic root of 89731651 is about 447.6946310657.

The spelling of 89731651 in words is "eighty-nine million, seven hundred thirty-one thousand, six hundred fifty-one".