87050657 has 2 divisors, whose sum is σ = 87050658. Its totient is φ = 87050656.

The previous prime is 87050597. The next prime is 87050669. The reversal of 87050657 is 75605078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51897616 + 35153041 = 7204^2 + 5929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87050657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87050657.

It is not a weakly prime, because it can be changed into another prime (87050357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43525328 + 43525329.

It is an arithmetic number, because the mean of its divisors is an integer number (43525329).

Almost surely, 2^87050657 is an apocalyptic number.

It is an amenable number.

87050657 is a deficient number, since it is larger than the sum of its proper divisors (1).

87050657 is an equidigital number, since it uses as much as digits as its factorization.

87050657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 87050657 is about 9330.0941581530. The cubic root of 87050657 is about 443.1907468543.

The spelling of 87050657 in words is "eighty-seven million, fifty thousand, six hundred fifty-seven".