87700651 has 2 divisors, whose sum is σ = 87700652. Its totient is φ = 87700650.

The previous prime is 87700631. The next prime is 87700703. The reversal of 87700651 is 15600778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87700651 - 2²¹ = 85603499 is a prime.

It is not a weakly prime, because it can be changed into another prime (87700621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43850325 + 43850326.

It is an arithmetic number, because the mean of its divisors is an integer number (43850326).

Almost surely, 2^87700651 is an apocalyptic number.

87700651 is a deficient number, since it is larger than the sum of its proper divisors (1).

87700651 is an equidigital number, since it uses as much as digits as its factorization.

87700651 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 34.

The square root of 87700651 is about 9364.8625724033. The cubic root of 87700651 is about 444.2910919517.

The spelling of 87700651 in words is "eighty-seven million, seven hundred thousand, six hundred fifty-one".