89651 has 4 divisors (see below), whose sum is σ = 92112. Its totient is φ = 87192.

The previous prime is 89633. The next prime is 89653. The reversal of 89651 is 15698.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89653) 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, 1175 + ... + 1248.

It is an arithmetic number, because the mean of its divisors is an integer number (23028).

2⁸⁹⁶⁵¹ is an apocalyptic number.

89651 is a deficient number, since it is larger than the sum of its proper divisors (2461).

89651 is a wasteful number, since it uses less digits than its factorization.

89651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460.

The product of its digits is 2160, while the sum is 29.

The square root of 89651 is about 299.4177683438. The cubic root of 89651 is about 44.7560461229.

The spelling of 89651 in words is "eighty-nine thousand, six hundred fifty-one".