2656961 has 2 divisors, whose sum is σ = 2656962. Its totient is φ = 2656960.

The previous prime is 2656949. The next prime is 2656987. The reversal of 2656961 is 1696562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 1168561 = 1220^2 + 1081^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656961 - 2¹⁰ = 2655937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2656921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328480 + 1328481.

It is an arithmetic number, because the mean of its divisors is an integer number (1328481).

2^2656961 is an apocalyptic number.

It is an amenable number.

2656961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656961 is an equidigital number, since it uses as much as digits as its factorization.

2656961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 2656961 is about 1630.0187115490. The cubic root of 2656961 is about 138.5038120131.

The spelling of 2656961 in words is "two million, six hundred fifty-six thousand, nine hundred sixty-one".