88390657 has 2 divisors, whose sum is σ = 88390658. Its totient is φ = 88390656.

The previous prime is 88390649. The next prime is 88390693. The reversal of 88390657 is 75609388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57820816 + 30569841 = 7604^2 + 5529^2 .

It is a cyclic number.

It is not a de Polignac number, because 88390657 - 2³ = 88390649 is a prime.

It is not a weakly prime, because it can be changed into another prime (88390457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44195328 + 44195329.

It is an arithmetic number, because the mean of its divisors is an integer number (44195329).

Almost surely, 2^88390657 is an apocalyptic number.

It is an amenable number.

88390657 is a deficient number, since it is larger than the sum of its proper divisors (1).

88390657 is an equidigital number, since it uses as much as digits as its factorization.

88390657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 88390657 is about 9401.6305500695. The cubic root of 88390657 is about 445.4532385041.

The spelling of 88390657 in words is "eighty-eight million, three hundred ninety thousand, six hundred fifty-seven".