3670391 has 4 divisors (see below), whose sum is σ = 3678192. Its totient is φ = 3662592.

The previous prime is 3670349. The next prime is 3670393. The reversal of 3670391 is 1930763.

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 3670391 - 2¹⁸ = 3408247 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 (3670393) 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, 3146 + ... + 4151.

It is an arithmetic number, because the mean of its divisors is an integer number (919548).

Almost surely, 2^3670391 is an apocalyptic number.

3670391 is a deficient number, since it is larger than the sum of its proper divisors (7801).

3670391 is an equidigital number, since it uses as much as digits as its factorization.

3670391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 3670391 is about 1915.8264535182. The cubic root of 3670391 is about 154.2543584215.

The spelling of 3670391 in words is "three million, six hundred seventy thousand, three hundred ninety-one".