7790621 has 2 divisors, whose sum is σ = 7790622. Its totient is φ = 7790620.

The previous prime is 7790597. The next prime is 7790623. The reversal of 7790621 is 1260977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7778521 + 12100 = 2789^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 7790621 - 2¹⁰ = 7789597 is a prime.

Together with 7790623, 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 (7790623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3895310 + 3895311.

It is an arithmetic number, because the mean of its divisors is an integer number (3895311).

Almost surely, 2^7790621 is an apocalyptic number.

It is an amenable number.

7790621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7790621 is an equidigital number, since it uses as much as digits as its factorization.

7790621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 7790621 is about 2791.1683933435. The cubic root of 7790621 is about 198.2397276590.

The spelling of 7790621 in words is "seven million, seven hundred ninety thousand, six hundred twenty-one".