4965661 has 2 divisors, whose sum is σ = 4965662. Its totient is φ = 4965660.

The previous prime is 4965643. The next prime is 4965671. The reversal of 4965661 is 1665694.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4866436 + 99225 = 2206^2 + 315^2 .

It is a cyclic number.

It is not a de Polignac number, because 4965661 - 2⁵ = 4965629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4965661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4965601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2482830 + 2482831.

It is an arithmetic number, because the mean of its divisors is an integer number (2482831).

Almost surely, 2^4965661 is an apocalyptic number.

It is an amenable number.

4965661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4965661 is an equidigital number, since it uses as much as digits as its factorization.

4965661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 4965661 is about 2228.3763147189. The cubic root of 4965661 is about 170.6052359849.

The spelling of 4965661 in words is "four million, nine hundred sixty-five thousand, six hundred sixty-one".