3261790621 has 2 divisors, whose sum is σ = 3261790622. Its totient is φ = 3261790620.

The previous prime is 3261790603. The next prime is 3261790669. The reversal of 3261790621 is 1260971623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3252420900 + 9369721 = 57030^2 + 3061^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261790621 - 2⁵ = 3261790589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3261790691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630895310 + 1630895311.

It is an arithmetic number, because the mean of its divisors is an integer number (1630895311).

Almost surely, 2^3261790621 is an apocalyptic number.

It is an amenable number.

3261790621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261790621 is an equidigital number, since it uses as much as digits as its factorization.

3261790621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 3261790621 is about 57112.0882213214. The cubic root of 3261790621 is about 1483.0371374361.

The spelling of 3261790621 in words is "three billion, two hundred sixty-one million, seven hundred ninety thousand, six hundred twenty-one".