87667417 has 2 divisors, whose sum is σ = 87667418. Its totient is φ = 87667416.

The previous prime is 87667409. The next prime is 87667469. The reversal of 87667417 is 71476678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82519056 + 5148361 = 9084^2 + 2269^2 .

It is a cyclic number.

It is not a de Polignac number, because 87667417 - 2³ = 87667409 is a prime.

It is not a weakly prime, because it can be changed into another prime (87667477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43833708 + 43833709.

It is an arithmetic number, because the mean of its divisors is an integer number (43833709).

Almost surely, 2^87667417 is an apocalyptic number.

It is an amenable number.

87667417 is a deficient number, since it is larger than the sum of its proper divisors (1).

87667417 is an equidigital number, since it uses as much as digits as its factorization.

87667417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 46.

The square root of 87667417 is about 9363.0880055674. The cubic root of 87667417 is about 444.2349637645.

The spelling of 87667417 in words is "eighty-seven million, six hundred sixty-seven thousand, four hundred seventeen".