90689867 has 8 divisors (see below), whose sum is σ = 92951040. Its totient is φ = 88456680.

The previous prime is 90689857. The next prime is 90689939. The reversal of 90689867 is 76898609.

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 90689867 - 2⁶ = 90689803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90689857) 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, 359 + ... + 13472.

It is an arithmetic number, because the mean of its divisors is an integer number (11618880).

Almost surely, 2^90689867 is an apocalyptic number.

90689867 is a deficient number, since it is larger than the sum of its proper divisors (2261173).

90689867 is a wasteful number, since it uses less digits than its factorization.

90689867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13993.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 90689867 is about 9523.1227546430. The cubic root of 90689867 is about 449.2825885636.

The spelling of 90689867 in words is "ninety million, six hundred eighty-nine thousand, eight hundred sixty-seven".