89767631 has 4 divisors (see below), whose sum is σ = 89788152. Its totient is φ = 89747112.

The previous prime is 89767627. The next prime is 89767649. The reversal of 89767631 is 13676798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13676798 = 2 ⋅6838399.

It is a cyclic number.

It is not a de Polignac number, because 89767631 - 2² = 89767627 is a prime.

It is a super-2 number, since 2×89767631² = 16116455150704322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89767651) 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, 776 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (22447038).

Almost surely, 2^89767631 is an apocalyptic number.

89767631 is a deficient number, since it is larger than the sum of its proper divisors (20521).

89767631 is a wasteful number, since it uses less digits than its factorization.

89767631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20520.

The product of its digits is 381024, while the sum is 47.

The square root of 89767631 is about 9474.5781436431. The cubic root of 89767631 is about 447.7544609405.

The spelling of 89767631 in words is "eighty-nine million, seven hundred sixty-seven thousand, six hundred thirty-one".