3716906621 has 2 divisors, whose sum is σ = 3716906622. Its totient is φ = 3716906620.

The previous prime is 3716906579. The next prime is 3716906657. The reversal of 3716906621 is 1266096173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2356034521 + 1360872100 = 48539^2 + 36890^2 .

It is an emirp because it is prime and its reverse (1266096173) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3716906621 - 2¹⁰ = 3716905597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3716902621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1858453310 + 1858453311.

It is an arithmetic number, because the mean of its divisors is an integer number (1858453311).

Almost surely, 2^3716906621 is an apocalyptic number.

It is an amenable number.

3716906621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3716906621 is an equidigital number, since it uses as much as digits as its factorization.

3716906621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 3716906621 is about 60966.4384805280. The cubic root of 3716906621 is about 1549.0325730004.

The spelling of 3716906621 in words is "three billion, seven hundred sixteen million, nine hundred six thousand, six hundred twenty-one".