3724267621 has 2 divisors, whose sum is σ = 3724267622. Its totient is φ = 3724267620.

The previous prime is 3724267579. The next prime is 3724267643. The reversal of 3724267621 is 1267624273.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2117380225 + 1606887396 = 46015^2 + 40086^2 .

It is a cyclic number.

It is not a de Polignac number, because 3724267621 - 2¹⁹ = 3723743333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3724267681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1862133810 + 1862133811.

It is an arithmetic number, because the mean of its divisors is an integer number (1862133811).

Almost surely, 2^3724267621 is an apocalyptic number.

It is an amenable number.

3724267621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3724267621 is an equidigital number, since it uses as much as digits as its factorization.

3724267621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 40.

The square root of 3724267621 is about 61026.7779011804. Note that the first 3 decimals coincide. The cubic root of 3724267621 is about 1550.0544720364.

The spelling of 3724267621 in words is "three billion, seven hundred twenty-four million, two hundred sixty-seven thousand, six hundred twenty-one".