90827645 has 8 divisors (see below), whose sum is σ = 109270104. Its totient is φ = 72477504.

The previous prime is 90827593. The next prime is 90827687. The reversal of 90827645 is 54672809.

It can be written as a sum of positive squares in 4 ways, for example, as 5098564 + 85729081 = 2258^2 + 9259^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 90827645 - 2¹² = 90823549 is a prime.

It is a super-2 number, since 2×90827645² = 16499322192492050, which contains 22 as substring.

It is a Duffinian number.

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, 20894 + ... + 24863.

It is an arithmetic number, because the mean of its divisors is an integer number (13658763).

Almost surely, 2^90827645 is an apocalyptic number.

It is an amenable number.

90827645 is a deficient number, since it is larger than the sum of its proper divisors (18442459).

90827645 is a wasteful number, since it uses less digits than its factorization.

90827645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46159.

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

The square root of 90827645 is about 9530.3538759062. The cubic root of 90827645 is about 449.5099933727.

The spelling of 90827645 in words is "ninety million, eight hundred twenty-seven thousand, six hundred forty-five".