90845672 has 16 divisors (see below), whose sum is σ = 171844740. Its totient is φ = 45020416.

The previous prime is 90845647. The next prime is 90845683. The reversal of 90845672 is 27654809.

It can be written as a sum of positive squares in 2 ways, for example, as 90516196 + 329476 = 9514^2 + 574^2 .

It is a super-2 number, since 2×90845672² = 16505872242263168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49343 + ... + 51150.

Almost surely, 2^90845672 is an apocalyptic number.

It is an amenable number.

90845672 is a deficient number, since it is larger than the sum of its proper divisors (80999068).

90845672 is a wasteful number, since it uses less digits than its factorization.

90845672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100612 (or 100608 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 90845672 is about 9531.2995965923. The cubic root of 90845672 is about 449.5397302096.

The spelling of 90845672 in words is "ninety million, eight hundred forty-five thousand, six hundred seventy-two".