89651587 has 2 divisors, whose sum is σ = 89651588. Its totient is φ = 89651586.

The previous prime is 89651581. The next prime is 89651609. The reversal of 89651587 is 78515698.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89651587 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89651587.

It is not a weakly prime, because it can be changed into another prime (89651581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44825793 + 44825794.

It is an arithmetic number, because the mean of its divisors is an integer number (44825794).

Almost surely, 2^89651587 is an apocalyptic number.

89651587 is a deficient number, since it is larger than the sum of its proper divisors (1).

89651587 is an equidigital number, since it uses as much as digits as its factorization.

89651587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 49.

The square root of 89651587 is about 9468.4521966370. The cubic root of 89651587 is about 447.5614380447.

The spelling of 89651587 in words is "eighty-nine million, six hundred fifty-one thousand, five hundred eighty-seven".