87627577 has 2 divisors, whose sum is σ = 87627578. Its totient is φ = 87627576.

The previous prime is 87627541. The next prime is 87627583. The reversal of 87627577 is 77572678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74839801 + 12787776 = 8651^2 + 3576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87627577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87627577.

It is not a weakly prime, because it can be changed into another prime (87627517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43813788 + 43813789.

It is an arithmetic number, because the mean of its divisors is an integer number (43813789).

Almost surely, 2^87627577 is an apocalyptic number.

It is an amenable number.

87627577 is a deficient number, since it is larger than the sum of its proper divisors (1).

87627577 is an equidigital number, since it uses as much as digits as its factorization.

87627577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152480, while the sum is 49.

The square root of 87627577 is about 9360.9602605716. The cubic root of 87627577 is about 444.1676601481.

The spelling of 87627577 in words is "eighty-seven million, six hundred twenty-seven thousand, five hundred seventy-seven".