3691679 has 4 divisors (see below), whose sum is σ = 3777576. Its totient is φ = 3605784.

The previous prime is 3691673. The next prime is 3691687. The reversal of 3691679 is 9761963.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9761963 = 59 ⋅165457.

It is a cyclic number.

It is not a de Polignac number, because 3691679 - 2¹² = 3687583 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 (3691673) 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, 42884 + ... + 42969.

It is an arithmetic number, because the mean of its divisors is an integer number (944394).

Almost surely, 2^3691679 is an apocalyptic number.

3691679 is a deficient number, since it is larger than the sum of its proper divisors (85897).

3691679 is an equidigital number, since it uses as much as digits as its factorization.

3691679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85896.

The product of its digits is 61236, while the sum is 41.

The square root of 3691679 is about 1921.3742477716. The cubic root of 3691679 is about 154.5520050595.

It can be divided in two parts, 369 and 1679, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 3691679 in words is "three million, six hundred ninety-one thousand, six hundred seventy-nine".