4992661 has 2 divisors, whose sum is σ = 4992662. Its totient is φ = 4992660.

The previous prime is 4992629. The next prime is 4992671. The reversal of 4992661 is 1662994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4906225 + 86436 = 2215^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 4992661 - 2⁵ = 4992629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4992661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4992671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2496330 + 2496331.

It is an arithmetic number, because the mean of its divisors is an integer number (2496331).

Almost surely, 2^4992661 is an apocalyptic number.

It is an amenable number.

4992661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4992661 is an equidigital number, since it uses as much as digits as its factorization.

4992661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 4992661 is about 2234.4263245854. The cubic root of 4992661 is about 170.9138902774.

It can be divided in two parts, 499 and 2661, that added together give a triangular number (3160 = T₇₉).

The spelling of 4992661 in words is "four million, nine hundred ninety-two thousand, six hundred sixty-one".