3727405 has 24 divisors (see below), whose sum is σ = 5046552. Its totient is φ = 2640000.

The previous prime is 3727397. The next prime is 3727441. The reversal of 3727405 is 5047273.

It can be written as a sum of positive squares in 4 ways, for example, as 352836 + 3374569 = 594^2 + 1837^2 .

It is not a de Polignac number, because 3727405 - 2³ = 3727397 is a prime.

It is an Ulam number.

It is a Duffinian number.

3727405 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36855 + ... + 36955.

It is an arithmetic number, because the mean of its divisors is an integer number (210273).

Almost surely, 2^3727405 is an apocalyptic number.

It is an amenable number.

3727405 is a deficient number, since it is larger than the sum of its proper divisors (1319147).

3727405 is a wasteful number, since it uses less digits than its factorization.

3727405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 3727405 is about 1930.6488546600. The cubic root of 3727405 is about 155.0489612928.

It can be divided in two parts, 372 and 7405, that added together give a palindrome (7777).

The spelling of 3727405 in words is "three million, seven hundred twenty-seven thousand, four hundred five".