90908537 has 8 divisors (see below), whose sum is σ = 96339456. Its totient is φ = 85486912.

The previous prime is 90908501. The next prime is 90908549. The reversal of 90908537 is 73580909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90908537 - 2¹⁸ = 90646393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90908494 and 90908503.

It is not an unprimeable number, because it can be changed into a prime (90908437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36308 + ... + 38730.

It is an arithmetic number, because the mean of its divisors is an integer number (12042432).

Almost surely, 2^90908537 is an apocalyptic number.

It is an amenable number.

90908537 is a deficient number, since it is larger than the sum of its proper divisors (5430919).

90908537 is a wasteful number, since it uses less digits than its factorization.

90908537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 90908537 is about 9534.5968451739. The cubic root of 90908537 is about 449.6433997932.

The spelling of 90908537 in words is "ninety million, nine hundred eight thousand, five hundred thirty-seven".