87011657 has 2 divisors, whose sum is σ = 87011658. Its totient is φ = 87011656.

The previous prime is 87011653. The next prime is 87011669. The reversal of 87011657 is 75611078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82065481 + 4946176 = 9059^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 87011657 - 2² = 87011653 is a prime.

It is not a weakly prime, because it can be changed into another prime (87011653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43505828 + 43505829.

It is an arithmetic number, because the mean of its divisors is an integer number (43505829).

Almost surely, 2^87011657 is an apocalyptic number.

It is an amenable number.

87011657 is a deficient number, since it is larger than the sum of its proper divisors (1).

87011657 is an equidigital number, since it uses as much as digits as its factorization.

87011657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 87011657 is about 9328.0039129494. The cubic root of 87011657 is about 443.1245516005.

The spelling of 87011657 in words is "eighty-seven million, eleven thousand, six hundred fifty-seven".