87668051 has 2 divisors, whose sum is σ = 87668052. Its totient is φ = 87668050.

The previous prime is 87668047. The next prime is 87668069. The reversal of 87668051 is 15086678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87668051 - 2² = 87668047 is a prime.

It is a super-2 number, since 2×87668051² = 15371374332277202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87668011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43834025 + 43834026.

It is an arithmetic number, because the mean of its divisors is an integer number (43834026).

Almost surely, 2^87668051 is an apocalyptic number.

87668051 is a deficient number, since it is larger than the sum of its proper divisors (1).

87668051 is an equidigital number, since it uses as much as digits as its factorization.

87668051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 87668051 is about 9363.1218618578. The cubic root of 87668051 is about 444.2360346461.

The spelling of 87668051 in words is "eighty-seven million, six hundred sixty-eight thousand, fifty-one".