90784997 has 8 divisors (see below), whose sum is σ = 93170880. Its totient is φ = 88411680.

The previous prime is 90784987. The next prime is 90784999. The reversal of 90784997 is 79948709.

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 90784997 - 2²⁴ = 74007781 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 (90784999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12497 + ... + 18377.

It is an arithmetic number, because the mean of its divisors is an integer number (11646360).

Almost surely, 2^90784997 is an apocalyptic number.

It is an amenable number.

90784997 is a deficient number, since it is larger than the sum of its proper divisors (2385883).

90784997 is a wasteful number, since it uses less digits than its factorization.

90784997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 90784997 is about 9528.1161306945. The cubic root of 90784997 is about 449.4396267513.

The spelling of 90784997 in words is "ninety million, seven hundred eighty-four thousand, nine hundred ninety-seven".