89764691 has 2 divisors, whose sum is σ = 89764692. Its totient is φ = 89764690.

The previous prime is 89764687. The next prime is 89764711. The reversal of 89764691 is 19646798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89764691 - 2² = 89764687 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89764681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44882345 + 44882346.

It is an arithmetic number, because the mean of its divisors is an integer number (44882346).

Almost surely, 2^89764691 is an apocalyptic number.

89764691 is a deficient number, since it is larger than the sum of its proper divisors (1).

89764691 is an equidigital number, since it uses as much as digits as its factorization.

89764691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 89764691 is about 9474.4229903462. The cubic root of 89764691 is about 447.7495727179.

The spelling of 89764691 in words is "eighty-nine million, seven hundred sixty-four thousand, six hundred ninety-one".