87614561 has 2 divisors, whose sum is σ = 87614562. Its totient is φ = 87614560.

The previous prime is 87614467. The next prime is 87614563. The reversal of 87614561 is 16541678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48163600 + 39450961 = 6940^2 + 6281^2 .

It is a cyclic number.

It is not a de Polignac number, because 87614561 - 2²² = 83420257 is a prime.

It is a super-2 number, since 2×87614561² = 15352622598445442, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 87614563, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87614563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43807280 + 43807281.

It is an arithmetic number, because the mean of its divisors is an integer number (43807281).

Almost surely, 2^87614561 is an apocalyptic number.

It is an amenable number.

87614561 is a deficient number, since it is larger than the sum of its proper divisors (1).

87614561 is an equidigital number, since it uses as much as digits as its factorization.

87614561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 87614561 is about 9360.2650069322. The cubic root of 87614561 is about 444.1456671761.

The spelling of 87614561 in words is "eighty-seven million, six hundred fourteen thousand, five hundred sixty-one".