3421691 has 16 divisors (see below), whose sum is σ = 4435200. Its totient is φ = 2563488.

The previous prime is 3421679. The next prime is 3421699. The reversal of 3421691 is 1961243.

It is a cyclic number.

It is not a de Polignac number, because 3421691 - 2¹⁰ = 3420667 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3421691.

It is not an unprimeable number, because it can be changed into a prime (3421699) 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, 740 + ... + 2718.

It is an arithmetic number, because the mean of its divisors is an integer number (277200).

Almost surely, 2^3421691 is an apocalyptic number.

3421691 is a deficient number, since it is larger than the sum of its proper divisors (1013509).

3421691 is a wasteful number, since it uses less digits than its factorization.

3421691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018.

The product of its digits is 1296, while the sum is 26.

The square root of 3421691 is about 1849.7813384290. The cubic root of 3421691 is about 150.6885529809.

The spelling of 3421691 in words is "three million, four hundred twenty-one thousand, six hundred ninety-one".