90869806 has 8 divisors (see below), whose sum is σ = 136509264. Its totient is φ = 45366720.

The previous prime is 90869797. The next prime is 90869833. The reversal of 90869806 is 60896809.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

90869806 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32410 + ... + 35101.

It is an arithmetic number, because the mean of its divisors is an integer number (17063658).

Almost surely, 2^90869806 is an apocalyptic number.

90869806 is a deficient number, since it is larger than the sum of its proper divisors (45639458).

90869806 is a wasteful number, since it uses less digits than its factorization.

90869806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68186.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 90869806 is about 9532.5655518334. The cubic root of 90869806 is about 449.5795348256.

The spelling of 90869806 in words is "ninety million, eight hundred sixty-nine thousand, eight hundred six".