89660387 has 2 divisors, whose sum is σ = 89660388. Its totient is φ = 89660386.

The previous prime is 89660381. The next prime is 89660393. The reversal of 89660387 is 78306698.

It is a balanced prime because it is at equal distance from previous prime (89660381) and next prime (89660393).

It is a cyclic number.

It is not a de Polignac number, because 89660387 - 2⁶ = 89660323 is a prime.

It is not a weakly prime, because it can be changed into another prime (89660381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44830193 + 44830194.

It is an arithmetic number, because the mean of its divisors is an integer number (44830194).

Almost surely, 2^89660387 is an apocalyptic number.

89660387 is a deficient number, since it is larger than the sum of its proper divisors (1).

89660387 is an equidigital number, since it uses as much as digits as its factorization.

89660387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 89660387 is about 9468.9168863181. The cubic root of 89660387 is about 447.5760814434.

The spelling of 89660387 in words is "eighty-nine million, six hundred sixty thousand, three hundred eighty-seven".