3721873 has 2 divisors, whose sum is σ = 3721874. Its totient is φ = 3721872.

The previous prime is 3721859. The next prime is 3721877. The reversal of 3721873 is 3781273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2917264 + 804609 = 1708^2 + 897^2 .

It is a cyclic number.

It is not a de Polignac number, because 3721873 - 2¹³ = 3713681 is a prime.

It is not a weakly prime, because it can be changed into another prime (3721877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860936 + 1860937.

It is an arithmetic number, because the mean of its divisors is an integer number (1860937).

Almost surely, 2^3721873 is an apocalyptic number.

It is an amenable number.

3721873 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721873 is an equidigital number, since it uses as much as digits as its factorization.

3721873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 3721873 is about 1929.2156437267. The cubic root of 3721873 is about 154.9722183993.

The spelling of 3721873 in words is "three million, seven hundred twenty-one thousand, eight hundred seventy-three".