90785747 has 8 divisors (see below), whose sum is σ = 101141040. Its totient is φ = 80912160.

The previous prime is 90785741. The next prime is 90785777. The reversal of 90785747 is 74758709.

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 90785747 - 2⁴ = 90785731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90785741) 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, 120029 + ... + 120782.

It is an arithmetic number, because the mean of its divisors is an integer number (12642630).

Almost surely, 2^90785747 is an apocalyptic number.

90785747 is a deficient number, since it is larger than the sum of its proper divisors (10355293).

90785747 is a wasteful number, since it uses less digits than its factorization.

90785747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240853.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 90785747 is about 9528.1554878161. The cubic root of 90785747 is about 449.4408643963.

The spelling of 90785747 in words is "ninety million, seven hundred eighty-five thousand, seven hundred forty-seven".