5717620621 has 2 divisors, whose sum is σ = 5717620622. Its totient is φ = 5717620620.

The previous prime is 5717620567. The next prime is 5717620631. The reversal of 5717620621 is 1260267175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4110733225 + 1606887396 = 64115^2 + 40086^2 .

It is a cyclic number.

It is not a de Polignac number, because 5717620621 - 2¹³ = 5717612429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5717620631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2858810310 + 2858810311.

It is an arithmetic number, because the mean of its divisors is an integer number (2858810311).

Almost surely, 2^5717620621 is an apocalyptic number.

It is an amenable number.

5717620621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5717620621 is an equidigital number, since it uses as much as digits as its factorization.

5717620621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 5717620621 is about 75614.9497189544. The cubic root of 5717620621 is about 1788.1547957951.

Adding to 5717620621 its reverse (1260267175), we get a palindrome (6977887796).

The spelling of 5717620621 in words is "five billion, seven hundred seventeen million, six hundred twenty thousand, six hundred twenty-one".