87946237 has 2 divisors, whose sum is σ = 87946238. Its totient is φ = 87946236.

The previous prime is 87946213. The next prime is 87946247. The reversal of 87946237 is 73264978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87216921 + 729316 = 9339^2 + 854^2 .

It is a cyclic number.

It is not a de Polignac number, because 87946237 - 2²³ = 79557629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87946247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43973118 + 43973119.

It is an arithmetic number, because the mean of its divisors is an integer number (43973119).

Almost surely, 2^87946237 is an apocalyptic number.

It is an amenable number.

87946237 is a deficient number, since it is larger than the sum of its proper divisors (1).

87946237 is an equidigital number, since it uses as much as digits as its factorization.

87946237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 87946237 is about 9377.9655043085. The cubic root of 87946237 is about 444.7054179627.

The spelling of 87946237 in words is "eighty-seven million, nine hundred forty-six thousand, two hundred thirty-seven".