3721775 has 12 divisors (see below), whose sum is σ = 4728864. Its totient is φ = 2904000.

The previous prime is 3721771. The next prime is 3721787. The reversal of 3721775 is 5771273.

It is not a de Polignac number, because 3721775 - 2² = 3721771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 791 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (394072).

Almost surely, 2^3721775 is an apocalyptic number.

3721775 is a deficient number, since it is larger than the sum of its proper divisors (1007089).

3721775 is a wasteful number, since it uses less digits than its factorization.

3721775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682 (or 3677 counting only the distinct ones).

The product of its digits is 10290, while the sum is 32.

The square root of 3721775 is about 1929.1902446363. The cubic root of 3721775 is about 154.9708582050.

It can be divided in two parts, 37 and 21775, that added together give a palindrome (21812).

The spelling of 3721775 in words is "three million, seven hundred twenty-one thousand, seven hundred seventy-five".