90651902 has 16 divisors (see below), whose sum is σ = 151959024. Its totient is φ = 40200000.

The previous prime is 90651839. The next prime is 90651919. The reversal of 90651902 is 20915609.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49349 + ... + 51152.

It is an arithmetic number, because the mean of its divisors is an integer number (9497439).

Almost surely, 2^90651902 is an apocalyptic number.

90651902 is a deficient number, since it is larger than the sum of its proper divisors (61307122).

90651902 is a wasteful number, since it uses less digits than its factorization.

90651902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100555.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 90651902 is about 9521.1292397488. The cubic root of 90651902 is about 449.2198862472.

The spelling of 90651902 in words is "ninety million, six hundred fifty-one thousand, nine hundred two".