3724621 has 2 divisors, whose sum is σ = 3724622. Its totient is φ = 3724620.

The previous prime is 3724603. The next prime is 3724631. The reversal of 3724621 is 1264273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3553225 + 171396 = 1885^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 3724621 - 2⁹ = 3724109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3724631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1862310 + 1862311.

It is an arithmetic number, because the mean of its divisors is an integer number (1862311).

Almost surely, 2^3724621 is an apocalyptic number.

It is an amenable number.

3724621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3724621 is an equidigital number, since it uses as much as digits as its factorization.

3724621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 3724621 is about 1929.9277188537. The cubic root of 3724621 is about 155.0103496384.

Adding to 3724621 its reverse (1264273), we get a palindrome (4988894).

The spelling of 3724621 in words is "three million, seven hundred twenty-four thousand, six hundred twenty-one".