296890661 has 6 divisors (see below), whose sum is σ = 307482162. Its totient is φ = 286652240.

The previous prime is 296890621. The next prime is 296890667. The reversal of 296890661 is 166098692.

It can be written as a sum of positive squares in 3 ways, for example, as 39929761 + 256960900 = 6319^2 + 16030^2 .

It is not a de Polignac number, because 296890661 - 2¹⁸ = 296628517 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 (296890667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175670 + ... + 177351.

It is an arithmetic number, because the mean of its divisors is an integer number (51247027).

Almost surely, 2^296890661 is an apocalyptic number.

It is an amenable number.

296890661 is a deficient number, since it is larger than the sum of its proper divisors (10591501).

296890661 is an equidigital number, since it uses as much as digits as its factorization.

296890661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353079 (or 353050 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 296890661 is about 17230.5154014614. The cubic root of 296890661 is about 667.1121424551.

The spelling of 296890661 in words is "two hundred ninety-six million, eight hundred ninety thousand, six hundred sixty-one".