7399661 has 2 divisors, whose sum is σ = 7399662. Its totient is φ = 7399660.

The previous prime is 7399649. The next prime is 7399663. The reversal of 7399661 is 1669937.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7155625 + 244036 = 2675^2 + 494^2 .

It is an emirp because it is prime and its reverse (1669937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7399661 - 2⁶ = 7399597 is a prime.

Together with 7399663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7399663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3699830 + 3699831.

It is an arithmetic number, because the mean of its divisors is an integer number (3699831).

Almost surely, 2^7399661 is an apocalyptic number.

It is an amenable number.

7399661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7399661 is an equidigital number, since it uses as much as digits as its factorization.

7399661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 41.

The square root of 7399661 is about 2720.2317915942. The cubic root of 7399661 is about 194.8665402818.

The spelling of 7399661 in words is "seven million, three hundred ninety-nine thousand, six hundred sixty-one".