3661401 has 8 divisors (see below), whose sum is σ = 4907200. Its totient is φ = 2428272.

The previous prime is 3661391. The next prime is 3661417. The reversal of 3661401 is 1041663.

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

It is not a de Polignac number, because 3661401 - 2⁵ = 3661369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3661421) 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, 2470 + ... + 3663.

It is an arithmetic number, because the mean of its divisors is an integer number (613400).

Almost surely, 2^3661401 is an apocalyptic number.

It is an amenable number.

3661401 is a deficient number, since it is larger than the sum of its proper divisors (1245799).

3661401 is a wasteful number, since it uses less digits than its factorization.

3661401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 3661401 is about 1913.4787691532. The cubic root of 3661401 is about 154.1283154989.

The spelling of 3661401 in words is "three million, six hundred sixty-one thousand, four hundred one".