90657722 has 8 divisors (see below), whose sum is σ = 136032276. Its totient is φ = 45313632.

The previous prime is 90657691. The next prime is 90657731. The reversal of 90657722 is 22775609.

It can be written as a sum of positive squares in 2 ways, for example, as 90649441 + 8281 = 9521^2 + 91^2 .

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

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, 2528 + ... + 13700.

Almost surely, 2^90657722 is an apocalyptic number.

90657722 is a deficient number, since it is larger than the sum of its proper divisors (45374554).

90657722 is a wasteful number, since it uses less digits than its factorization.

90657722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15232.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 90657722 is about 9521.4348708585. The cubic root of 90657722 is about 449.2294995913.

The spelling of 90657722 in words is "ninety million, six hundred fifty-seven thousand, seven hundred twenty-two".