3690431 has 4 divisors (see below), whose sum is σ = 3696000. Its totient is φ = 3684864.

The previous prime is 3690397. The next prime is 3690437. The reversal of 3690431 is 1340963.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3690431 - 2¹⁸ = 3428287 is a prime.

It is a super-2 number, since 2×3690431² = 27238561931522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3690431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3690437) 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, 1631 + ... + 3168.

It is an arithmetic number, because the mean of its divisors is an integer number (924000).

Almost surely, 2^3690431 is an apocalyptic number.

3690431 is a deficient number, since it is larger than the sum of its proper divisors (5569).

3690431 is an equidigital number, since it uses as much as digits as its factorization.

3690431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3690431 is about 1921.0494527731. The cubic root of 3690431 is about 154.5345872719.

The spelling of 3690431 in words is "three million, six hundred ninety thousand, four hundred thirty-one".