89376561 has 16 divisors (see below), whose sum is σ = 132693120. Its totient is φ = 59456880.

The previous prime is 89376527. The next prime is 89376577. The reversal of 89376561 is 16567398.

It is a happy number.

89376561 is a `hidden beast` number, since 89 + 3 + 7 + 6 + 561 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-89376561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89376061) 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, 10291 + ... + 16871.

It is an arithmetic number, because the mean of its divisors is an integer number (8293320).

Almost surely, 2^89376561 is an apocalyptic number.

It is an amenable number.

89376561 is a deficient number, since it is larger than the sum of its proper divisors (43316559).

89376561 is a wasteful number, since it uses less digits than its factorization.

89376561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7093 (or 7087 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 89376561 is about 9453.9177593207. The cubic root of 89376561 is about 447.1033048026.

The spelling of 89376561 in words is "eighty-nine million, three hundred seventy-six thousand, five hundred sixty-one".