7662712621 has 2 divisors, whose sum is σ = 7662712622. Its totient is φ = 7662712620.

The previous prime is 7662712573. The next prime is 7662712657. The reversal of 7662712621 is 1262172667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6626774025 + 1035938596 = 81405^2 + 32186^2 .

It is a cyclic number.

It is not a de Polignac number, because 7662712621 - 2¹⁵ = 7662679853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7662722621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3831356310 + 3831356311.

It is an arithmetic number, because the mean of its divisors is an integer number (3831356311).

Almost surely, 2^7662712621 is an apocalyptic number.

It is an amenable number.

7662712621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7662712621 is an equidigital number, since it uses as much as digits as its factorization.

7662712621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 7662712621 is about 87536.9214731704. The cubic root of 7662712621 is about 1971.4881882040.

The spelling of 7662712621 in words is "seven billion, six hundred sixty-two million, seven hundred twelve thousand, six hundred twenty-one".