90906766 has 16 divisors (see below), whose sum is σ = 139454784. Its totient is φ = 44428384.

The previous prime is 90906749. The next prime is 90906791. The reversal of 90906766 is 66760909.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29595 + ... + 32521.

It is an arithmetic number, because the mean of its divisors is an integer number (8715924).

Almost surely, 2^90906766 is an apocalyptic number.

90906766 is a deficient number, since it is larger than the sum of its proper divisors (48548018).

90906766 is a wasteful number, since it uses less digits than its factorization.

90906766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 90906766 is about 9534.5039724151. The cubic root of 90906766 is about 449.6404799220.

The spelling of 90906766 in words is "ninety million, nine hundred six thousand, seven hundred sixty-six".