3668491 has 8 divisors (see below), whose sum is σ = 3792960. Its totient is φ = 3546048.

The previous prime is 3668461. The next prime is 3668503. The reversal of 3668491 is 1948663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3668491 is a prime.

It is an Ulam number.

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 3668491.

It is not an unprimeable number, because it can be changed into a prime (3668461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3745 + ... + 4621.

It is an arithmetic number, because the mean of its divisors is an integer number (474120).

Almost surely, 2^3668491 is an apocalyptic number.

3668491 is a deficient number, since it is larger than the sum of its proper divisors (124469).

3668491 is an equidigital number, since it uses as much as digits as its factorization.

3668491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013.

The product of its digits is 31104, while the sum is 37.

The square root of 3668491 is about 1915.3305197798. The cubic root of 3668491 is about 154.2277369282.

The spelling of 3668491 in words is "three million, six hundred sixty-eight thousand, four hundred ninety-one".