3740861 has 4 divisors (see below), whose sum is σ = 3744732. Its totient is φ = 3736992.

The previous prime is 3740851. The next prime is 3740873. The reversal of 3740861 is 1680473.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1680473 = 433 ⋅3881.

It can be written as a sum of positive squares in 2 ways, for example, as 2544025 + 1196836 = 1595^2 + 1094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3740861 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3740851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881 + ... + 2873.

It is an arithmetic number, because the mean of its divisors is an integer number (936183).

Almost surely, 2^3740861 is an apocalyptic number.

It is an amenable number.

3740861 is a deficient number, since it is larger than the sum of its proper divisors (3871).

3740861 is a wasteful number, since it uses less digits than its factorization.

3740861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 3740861 is about 1934.1305540216. The cubic root of 3740861 is about 155.2353137527.

The spelling of 3740861 in words is "three million, seven hundred forty thousand, eight hundred sixty-one".