90857506 has 8 divisors (see below), whose sum is σ = 143459280. Its totient is φ = 43037748.

The previous prime is 90857491. The next prime is 90857513. The reversal of 90857506 is 60575809.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195456 + ... + 1195531.

It is an arithmetic number, because the mean of its divisors is an integer number (17932410).

Almost surely, 2^90857506 is an apocalyptic number.

90857506 is a deficient number, since it is larger than the sum of its proper divisors (52601774).

90857506 is a wasteful number, since it uses less digits than its factorization.

90857506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391008.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 90857506 is about 9531.9203731462. The cubic root of 90857506 is about 449.5592491075.

The spelling of 90857506 in words is "ninety million, eight hundred fifty-seven thousand, five hundred six".