88640087 has 2 divisors, whose sum is σ = 88640088. Its totient is φ = 88640086.

The previous prime is 88640051. The next prime is 88640131. The reversal of 88640087 is 78004688.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88640087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88640017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44320043 + 44320044.

It is an arithmetic number, because the mean of its divisors is an integer number (44320044).

Almost surely, 2^88640087 is an apocalyptic number.

88640087 is a deficient number, since it is larger than the sum of its proper divisors (1).

88640087 is an equidigital number, since it uses as much as digits as its factorization.

88640087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 88640087 is about 9414.8864570955. The cubic root of 88640087 is about 445.8718538315.

The spelling of 88640087 in words is "eighty-eight million, six hundred forty thousand, eighty-seven".