90642667 has 16 divisors (see below), whose sum is σ = 97625088. Its totient is φ = 83996640.

The previous prime is 90642659. The next prime is 90642697. The reversal of 90642667 is 76624609.

It is a cyclic number.

It is not a de Polignac number, because 90642667 - 2³ = 90642659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90642697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70008 + ... + 71290.

It is an arithmetic number, because the mean of its divisors is an integer number (6101568).

Almost surely, 2^90642667 is an apocalyptic number.

90642667 is a deficient number, since it is larger than the sum of its proper divisors (6982421).

90642667 is a wasteful number, since it uses less digits than its factorization.

90642667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 90642667 is about 9520.6442534106. The cubic root of 90642667 is about 449.2046312390.

The spelling of 90642667 in words is "ninety million, six hundred forty-two thousand, six hundred sixty-seven".