3401661 has 16 divisors (see below), whose sum is σ = 4751360. Its totient is φ = 2162160.

The previous prime is 3401659. The next prime is 3401663. The reversal of 3401661 is 1661043.

It is an interprime number because it is at equal distance from previous prime (3401659) and next prime (3401663).

It is not a de Polignac number, because 3401661 - 2¹ = 3401659 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3401663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7116 + ... + 7578.

It is an arithmetic number, because the mean of its divisors is an integer number (296960).

Almost surely, 2^3401661 is an apocalyptic number.

3401661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3401661 is a deficient number, since it is larger than the sum of its proper divisors (1349699).

3401661 is a wasteful number, since it uses less digits than its factorization.

3401661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

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

The square root of 3401661 is about 1844.3592383264. The cubic root of 3401661 is about 150.3939422687.

The spelling of 3401661 in words is "three million, four hundred one thousand, six hundred sixty-one".