3671691 has 4 divisors (see below), whose sum is σ = 4895592. Its totient is φ = 2447792.

The previous prime is 3671669. The next prime is 3671761. The reversal of 3671691 is 1961763.

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 3671691 - 2⁶ = 3671627 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3671891) 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, 611946 + ... + 611951.

It is an arithmetic number, because the mean of its divisors is an integer number (1223898).

Almost surely, 2^3671691 is an apocalyptic number.

3671691 is a deficient number, since it is larger than the sum of its proper divisors (1223901).

3671691 is a wasteful number, since it uses less digits than its factorization.

3671691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223900.

The product of its digits is 6804, while the sum is 33.

The square root of 3671691 is about 1916.1657026468. The cubic root of 3671691 is about 154.2725678344.

The spelling of 3671691 in words is "three million, six hundred seventy-one thousand, six hundred ninety-one".