90678957 has 8 divisors (see below), whose sum is σ = 120972384. Its totient is φ = 60419088.

The previous prime is 90678947. The next prime is 90678979. The reversal of 90678957 is 75987609.

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

It is not a de Polignac number, because 90678957 - 2⁴ = 90678941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90678947) 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, 1203 + ... + 13520.

It is an arithmetic number, because the mean of its divisors is an integer number (15121548).

Almost surely, 2^90678957 is an apocalyptic number.

It is an amenable number.

90678957 is a deficient number, since it is larger than the sum of its proper divisors (30293427).

90678957 is a wasteful number, since it uses less digits than its factorization.

90678957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16779.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 90678957 is about 9522.5499211083. The cubic root of 90678957 is about 449.2645715944.

The spelling of 90678957 in words is "ninety million, six hundred seventy-eight thousand, nine hundred fifty-seven".