827090661 has 4 divisors (see below), whose sum is σ = 1102787552. Its totient is φ = 551393772.

The previous prime is 827090629. The next prime is 827090669. The reversal of 827090661 is 166090728.

827090661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 827090661 - 2⁵ = 827090629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827090669) 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, 137848441 + ... + 137848446.

It is an arithmetic number, because the mean of its divisors is an integer number (275696888).

Almost surely, 2^827090661 is an apocalyptic number.

It is an amenable number.

827090661 is a deficient number, since it is larger than the sum of its proper divisors (275696891).

827090661 is a wasteful number, since it uses less digits than its factorization.

827090661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275696890.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 827090661 is about 28759.1839418298. The cubic root of 827090661 is about 938.6803048134.

The spelling of 827090661 in words is "eight hundred twenty-seven million, ninety thousand, six hundred sixty-one".