87617437 has 2 divisors, whose sum is σ = 87617438. Its totient is φ = 87617436.

The previous prime is 87617429. The next prime is 87617449. The reversal of 87617437 is 73471678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86007076 + 1610361 = 9274^2 + 1269^2 .

It is a cyclic number.

It is not a de Polignac number, because 87617437 - 2³ = 87617429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87617393 and 87617402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87617137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43808718 + 43808719.

It is an arithmetic number, because the mean of its divisors is an integer number (43808719).

Almost surely, 2^87617437 is an apocalyptic number.

It is an amenable number.

87617437 is a deficient number, since it is larger than the sum of its proper divisors (1).

87617437 is an equidigital number, since it uses as much as digits as its factorization.

87617437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 43.

The square root of 87617437 is about 9360.4186338005. The cubic root of 87617437 is about 444.1505269047.

The spelling of 87617437 in words is "eighty-seven million, six hundred seventeen thousand, four hundred thirty-seven".