3698643 has 8 divisors (see below), whose sum is σ = 5310928. Its totient is φ = 2276064.

The previous prime is 3698623. The next prime is 3698647. The reversal of 3698643 is 3468963.

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

It is not a de Polignac number, because 3698643 - 2⁹ = 3698131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 94837 = 3698643 / (3 + 6 + 9 + 8 + 6 + 4 + 3).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3698647) 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, 47380 + ... + 47457.

It is an arithmetic number, because the mean of its divisors is an integer number (663866).

Almost surely, 2^3698643 is an apocalyptic number.

3698643 is a deficient number, since it is larger than the sum of its proper divisors (1612285).

3698643 is a wasteful number, since it uses less digits than its factorization.

3698643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94853.

The product of its digits is 93312, while the sum is 39.

The square root of 3698643 is about 1923.1856384655. The cubic root of 3698643 is about 154.6491265492.

The spelling of 3698643 in words is "three million, six hundred ninety-eight thousand, six hundred forty-three".