90651722 has 16 divisors (see below), whose sum is σ = 155605632. Its totient is φ = 38800080.

The previous prime is 90651721. The next prime is 90651727. The reversal of 90651722 is 22715609.

It is not an unprimeable number, because it can be changed into a prime (90651721) 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, 8147 + ... + 15737.

It is an arithmetic number, because the mean of its divisors is an integer number (9725352).

Almost surely, 2^90651722 is an apocalyptic number.

90651722 is a deficient number, since it is larger than the sum of its proper divisors (64953910).

90651722 is a wasteful number, since it uses less digits than its factorization.

90651722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 90651722 is about 9521.1197870839. The cubic root of 90651722 is about 449.2195889207.

The spelling of 90651722 in words is "ninety million, six hundred fifty-one thousand, seven hundred twenty-two".