3677613721 has 2 divisors, whose sum is σ = 3677613722. Its totient is φ = 3677613720.

The previous prime is 3677613703. The next prime is 3677613733. The reversal of 3677613721 is 1273167763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3673693321 + 3920400 = 60611^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 3677613721 - 2⁷ = 3677613593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3677613521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1838806860 + 1838806861.

It is an arithmetic number, because the mean of its divisors is an integer number (1838806861).

Almost surely, 2^3677613721 is an apocalyptic number.

It is an amenable number.

3677613721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3677613721 is an equidigital number, since it uses as much as digits as its factorization.

3677613721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 43.

The square root of 3677613721 is about 60643.3320407116. The cubic root of 3677613721 is about 1543.5547445881.

The spelling of 3677613721 in words is "three billion, six hundred seventy-seven million, six hundred thirteen thousand, seven hundred twenty-one".