90827669 has 4 divisors (see below), whose sum is σ = 93043020. Its totient is φ = 88612320.

The previous prime is 90827593. The next prime is 90827687. The reversal of 90827669 is 96672809.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15311569 + 75516100 = 3913^2 + 8690^2 .

It is a cyclic number.

It is not a de Polignac number, because 90827669 - 2²⁰ = 89779093 is a prime.

It is a super-2 number, since 2×90827669² = 16499330911947122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90827689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107614 + ... + 1107695.

It is an arithmetic number, because the mean of its divisors is an integer number (23260755).

Almost surely, 2^90827669 is an apocalyptic number.

It is an amenable number.

90827669 is a deficient number, since it is larger than the sum of its proper divisors (2215351).

90827669 is a wasteful number, since it uses less digits than its factorization.

90827669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215350.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 90827669 is about 9530.3551350409. The cubic root of 90827669 is about 449.5100329650.

The spelling of 90827669 in words is "ninety million, eight hundred twenty-seven thousand, six hundred sixty-nine".