3786731 has 4 divisors (see below), whose sum is σ = 4078032. Its totient is φ = 3495432.

The previous prime is 3786703. The next prime is 3786749. The reversal of 3786731 is 1376873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1376873 = 19 ⋅72467.

It is a cyclic number.

It is not a de Polignac number, because 3786731 - 2⁶ = 3786667 is a prime.

It is a super-2 number, since 2×3786731² = 28678663332722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3786691 and 3786700.

It is not an unprimeable number, because it can be changed into a prime (3786751) 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, 145631 + ... + 145656.

It is an arithmetic number, because the mean of its divisors is an integer number (1019508).

Almost surely, 2^3786731 is an apocalyptic number.

3786731 is a deficient number, since it is larger than the sum of its proper divisors (291301).

3786731 is a wasteful number, since it uses less digits than its factorization.

3786731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291300.

The product of its digits is 21168, while the sum is 35.

The square root of 3786731 is about 1945.9524660176. The cubic root of 3786731 is about 155.8672303383.

It can be divided in two parts, 37 and 86731, that added together give a palindrome (86768).

The spelling of 3786731 in words is "three million, seven hundred eighty-six thousand, seven hundred thirty-one".