87297677 has 2 divisors, whose sum is σ = 87297678. Its totient is φ = 87297676.

The previous prime is 87297619. The next prime is 87297709. The reversal of 87297677 is 77679278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80174116 + 7123561 = 8954^2 + 2669^2 .

It is a cyclic number.

It is not a de Polignac number, because 87297677 - 2²⁰ = 86249101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87297577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43648838 + 43648839.

It is an arithmetic number, because the mean of its divisors is an integer number (43648839).

Almost surely, 2^87297677 is an apocalyptic number.

It is an amenable number.

87297677 is a deficient number, since it is larger than the sum of its proper divisors (1).

87297677 is an equidigital number, since it uses as much as digits as its factorization.

87297677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2074464, while the sum is 53.

The square root of 87297677 is about 9343.3225888867. The cubic root of 87297677 is about 443.6095588896.

The spelling of 87297677 in words is "eighty-seven million, two hundred ninety-seven thousand, six hundred seventy-seven".