7613770921 has 2 divisors, whose sum is σ = 7613770922. Its totient is φ = 7613770920.

The previous prime is 7613770847. The next prime is 7613770949. The reversal of 7613770921 is 1290773167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6356075625 + 1257695296 = 79725^2 + 35464^2 .

It is a cyclic number.

It is not a de Polignac number, because 7613770921 - 2¹¹ = 7613768873 is a prime.

It is not a weakly prime, because it can be changed into another prime (7613870921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3806885460 + 3806885461.

It is an arithmetic number, because the mean of its divisors is an integer number (3806885461).

Almost surely, 2^7613770921 is an apocalyptic number.

It is an amenable number.

7613770921 is a deficient number, since it is larger than the sum of its proper divisors (1).

7613770921 is an equidigital number, since it uses as much as digits as its factorization.

7613770921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 7613770921 is about 87256.9247739112. The cubic root of 7613770921 is about 1967.2819258791.

The spelling of 7613770921 in words is "seven billion, six hundred thirteen million, seven hundred seventy thousand, nine hundred twenty-one".