88665517 has 2 divisors, whose sum is σ = 88665518. Its totient is φ = 88665516.

The previous prime is 88665463. The next prime is 88665541. The reversal of 88665517 is 71556688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88566921 + 98596 = 9411^2 + 314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88665517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88665817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44332758 + 44332759.

It is an arithmetic number, because the mean of its divisors is an integer number (44332759).

Almost surely, 2^88665517 is an apocalyptic number.

It is an amenable number.

88665517 is a deficient number, since it is larger than the sum of its proper divisors (1).

88665517 is an equidigital number, since it uses as much as digits as its factorization.

88665517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 46.

The square root of 88665517 is about 9416.2368810475. The cubic root of 88665517 is about 445.9144885561.

The spelling of 88665517 in words is "eighty-eight million, six hundred sixty-five thousand, five hundred seventeen".