90775707 has 8 divisors (see below), whose sum is σ = 132037440. Its totient is φ = 55015560.

The previous prime is 90775703. The next prime is 90775739. The reversal of 90775707 is 70757709.

It is a happy number.

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

It is not a de Polignac number, because 90775707 - 2² = 90775703 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (90775703) 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, 1375357 + ... + 1375422.

It is an arithmetic number, because the mean of its divisors is an integer number (16504680).

Almost surely, 2^90775707 is an apocalyptic number.

90775707 is a deficient number, since it is larger than the sum of its proper divisors (41261733).

90775707 is a wasteful number, since it uses less digits than its factorization.

90775707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750793.

The product of its (nonzero) digits is 108045, while the sum is 42.

The square root of 90775707 is about 9527.6286136688. The cubic root of 90775707 is about 449.4242958901.

The spelling of 90775707 in words is "ninety million, seven hundred seventy-five thousand, seven hundred seven".