3698421 has 8 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 2441472.

The previous prime is 3698419. The next prime is 3698441. The reversal of 3698421 is 1248963.

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

It is not a de Polignac number, because 3698421 - 2¹ = 3698419 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (3698441) 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, 5676 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^3698421 is an apocalyptic number.

It is an amenable number.

3698421 is a deficient number, since it is larger than the sum of its proper divisors (1281099).

3698421 is a wasteful number, since it uses less digits than its factorization.

3698421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12075.

The product of its digits is 10368, while the sum is 33.

The square root of 3698421 is about 1923.1279208623. The cubic root of 3698421 is about 154.6460323700.

The spelling of 3698421 in words is "three million, six hundred ninety-eight thousand, four hundred twenty-one".