3699643 has 4 divisors (see below), whose sum is σ = 3709360. Its totient is φ = 3689928.

The previous prime is 3699629. The next prime is 3699671. The reversal of 3699643 is 3469963.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3699643 - 2⁹ = 3699131 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3699596 and 3699605.

It is not an unprimeable number, because it can be changed into a prime (3699613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4263 + ... + 5056.

It is an arithmetic number, because the mean of its divisors is an integer number (927340).

Almost surely, 2^3699643 is an apocalyptic number.

3699643 is a deficient number, since it is larger than the sum of its proper divisors (9717).

3699643 is an equidigital number, since it uses as much as digits as its factorization.

3699643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9716.

The product of its digits is 104976, while the sum is 40.

The square root of 3699643 is about 1923.4456061974. The cubic root of 3699643 is about 154.6630627587.

The spelling of 3699643 in words is "three million, six hundred ninety-nine thousand, six hundred forty-three".