3626405221 has 2 divisors, whose sum is σ = 3626405222. Its totient is φ = 3626405220.

The previous prime is 3626405197. The next prime is 3626405231. The reversal of 3626405221 is 1225046263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1850204196 + 1776201025 = 43014^2 + 42145^2 .

It is a cyclic number.

It is not a de Polignac number, because 3626405221 - 2¹¹ = 3626403173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3626405231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1813202610 + 1813202611.

It is an arithmetic number, because the mean of its divisors is an integer number (1813202611).

Almost surely, 2^3626405221 is an apocalyptic number.

It is an amenable number.

3626405221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3626405221 is an equidigital number, since it uses as much as digits as its factorization.

3626405221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 3626405221 is about 60219.6414884712. The cubic root of 3626405221 is about 1536.3568830214.

The spelling of 3626405221 in words is "three billion, six hundred twenty-six million, four hundred five thousand, two hundred twenty-one".