90666415 has 12 divisors (see below), whose sum is σ = 126563256. Its totient is φ = 62171088.

The previous prime is 90666409. The next prime is 90666419. The reversal of 90666415 is 51466609.

It is not a de Polignac number, because 90666415 - 2¹³ = 90658223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90666419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184789 + ... + 185278.

It is an arithmetic number, because the mean of its divisors is an integer number (10546938).

Almost surely, 2^90666415 is an apocalyptic number.

90666415 is a deficient number, since it is larger than the sum of its proper divisors (35896841).

90666415 is a wasteful number, since it uses less digits than its factorization.

90666415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370086 (or 370079 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 90666415 is about 9521.8913562380. The cubic root of 90666415 is about 449.2438577256.

The spelling of 90666415 in words is "ninety million, six hundred sixty-six thousand, four hundred fifteen".