90687415 has 16 divisors (see below), whose sum is σ = 133939008. Its totient is φ = 57401856.

The previous prime is 90687403. The next prime is 90687427. The reversal of 90687415 is 51478609.

It is an interprime number because it is at equal distance from previous prime (90687403) and next prime (90687427).

It is a cyclic number.

It is not a de Polignac number, because 90687415 - 2⁹ = 90686903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99202 + ... + 100111.

It is an arithmetic number, because the mean of its divisors is an integer number (8371188).

Almost surely, 2^90687415 is an apocalyptic number.

90687415 is a deficient number, since it is larger than the sum of its proper divisors (43251593).

90687415 is a wasteful number, since it uses less digits than its factorization.

90687415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199338.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 90687415 is about 9522.9940144894. The cubic root of 90687415 is about 449.2785394128.

The spelling of 90687415 in words is "ninety million, six hundred eighty-seven thousand, four hundred fifteen".