90892661 has 2 divisors, whose sum is σ = 90892662. Its totient is φ = 90892660.

The previous prime is 90892631. The next prime is 90892673. The reversal of 90892661 is 16629809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46922500 + 43970161 = 6850^2 + 6631^2 .

It is a cyclic number.

It is not a de Polignac number, because 90892661 - 2¹⁸ = 90630517 is a prime.

It is a super-2 number, since 2×90892661² = 16522951647321842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90892621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45446330 + 45446331.

It is an arithmetic number, because the mean of its divisors is an integer number (45446331).

Almost surely, 2^90892661 is an apocalyptic number.

It is an amenable number.

90892661 is a deficient number, since it is larger than the sum of its proper divisors (1).

90892661 is an equidigital number, since it uses as much as digits as its factorization.

90892661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 90892661 is about 9533.7642618223. The cubic root of 90892661 is about 449.6172234682.

The spelling of 90892661 in words is "ninety million, eight hundred ninety-two thousand, six hundred sixty-one".