3425621 has 2 divisors, whose sum is σ = 3425622. Its totient is φ = 3425620.

The previous prime is 3425603. The next prime is 3425627. The reversal of 3425621 is 1265243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2640625 + 784996 = 1625^2 + 886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3425621 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3425627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712810 + 1712811.

It is an arithmetic number, because the mean of its divisors is an integer number (1712811).

Almost surely, 2^3425621 is an apocalyptic number.

It is an amenable number.

3425621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3425621 is an equidigital number, since it uses as much as digits as its factorization.

3425621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 3425621 is about 1850.8433212998. The cubic root of 3425621 is about 150.7462222669.

The spelling of 3425621 in words is "three million, four hundred twenty-five thousand, six hundred twenty-one".