90768031 has 8 divisors (see below), whose sum is σ = 94068864. Its totient is φ = 87490560.

The previous prime is 90768023. The next prime is 90768037. The reversal of 90768031 is 13086709.

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 90768031 - 2³ = 90768023 is a prime.

It is a super-2 number, since 2×90768031² = 16477670903233922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90768037) 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, 2271 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (11758608).

Almost surely, 2^90768031 is an apocalyptic number.

90768031 is a deficient number, since it is larger than the sum of its proper divisors (3300833).

90768031 is a wasteful number, since it uses less digits than its factorization.

90768031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11681.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 90768031 is about 9527.2257766886. The cubic root of 90768031 is about 449.4116277500.

The spelling of 90768031 in words is "ninety million, seven hundred sixty-eight thousand, thirty-one".