874972621 has 2 divisors, whose sum is σ = 874972622. Its totient is φ = 874972620.

The previous prime is 874972607. The next prime is 874972627. The reversal of 874972621 is 126279478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 813960900 + 61011721 = 28530^2 + 7811^2 .

It is a cyclic number.

It is not a de Polignac number, because 874972621 - 2¹⁵ = 874939853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (874972627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437486310 + 437486311.

It is an arithmetic number, because the mean of its divisors is an integer number (437486311).

Almost surely, 2^874972621 is an apocalyptic number.

It is an amenable number.

874972621 is a deficient number, since it is larger than the sum of its proper divisors (1).

874972621 is an equidigital number, since it uses as much as digits as its factorization.

874972621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 874972621 is about 29579.9361223110. The cubic root of 874972621 is about 956.4556152549.

The spelling of 874972621 in words is "eight hundred seventy-four million, nine hundred seventy-two thousand, six hundred twenty-one".