90697907 has 8 divisors (see below), whose sum is σ = 96130800. Its totient is φ = 85275904.

The previous prime is 90697903. The next prime is 90697933. The reversal of 90697907 is 70979609.

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 90697907 - 2² = 90697903 is a prime.

It is a super-2 number, since 2×90697907² = 16452220668361298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90697903) 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, 19844 + ... + 23982.

It is an arithmetic number, because the mean of its divisors is an integer number (12016350).

Almost surely, 2^90697907 is an apocalyptic number.

90697907 is a deficient number, since it is larger than the sum of its proper divisors (5432893).

90697907 is a wasteful number, since it uses less digits than its factorization.

90697907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445.

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 90697907 is about 9523.5448757277. The cubic root of 90697907 is about 449.2958650386.

The spelling of 90697907 in words is "ninety million, six hundred ninety-seven thousand, nine hundred seven".