89746581 has 16 divisors (see below), whose sum is σ = 126540288. Its totient is φ = 56486400.

The previous prime is 89746577. The next prime is 89746583. The reversal of 89746581 is 18564798.

It is not a de Polignac number, because 89746581 - 2² = 89746577 is a prime.

It is a super-2 number, since 2×89746581² = 16108897602379122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89746581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89746583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7956 + ... + 15581.

It is an arithmetic number, because the mean of its divisors is an integer number (7908768).

Almost surely, 2^89746581 is an apocalyptic number.

It is an amenable number.

89746581 is a deficient number, since it is larger than the sum of its proper divisors (36793707).

89746581 is a wasteful number, since it uses less digits than its factorization.

89746581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23612.

The product of its digits is 483840, while the sum is 48.

The square root of 89746581 is about 9473.4672111113. The cubic root of 89746581 is about 447.7194595779.

The spelling of 89746581 in words is "eighty-nine million, seven hundred forty-six thousand, five hundred eighty-one".