790003661 has 2 divisors, whose sum is σ = 790003662. Its totient is φ = 790003660.

The previous prime is 790003657. The next prime is 790003663. The reversal of 790003661 is 166300097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776681161 + 13322500 = 27869^2 + 3650^2 .

It is a cyclic number.

It is not a de Polignac number, because 790003661 - 2² = 790003657 is a prime.

It is a Sophie Germain prime.

Together with 790003663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (790003663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395001830 + 395001831.

It is an arithmetic number, because the mean of its divisors is an integer number (395001831).

Almost surely, 2^790003661 is an apocalyptic number.

It is an amenable number.

790003661 is a deficient number, since it is larger than the sum of its proper divisors (1).

790003661 is an equidigital number, since it uses as much as digits as its factorization.

790003661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 790003661 is about 28107.0037713023. The cubic root of 790003661 is about 924.4349745317.

It can be divided in two parts, 7900036 and 61, that added together give a palindrome (7900097).

The spelling of 790003661 in words is "seven hundred ninety million, three thousand, six hundred sixty-one".