3725643 has 8 divisors (see below), whose sum is σ = 5073408. Its totient is φ = 2430824.

The previous prime is 3725597. The next prime is 3725651. The reversal of 3725643 is 3465273.

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

It is a cyclic number.

It is not a de Polignac number, because 3725643 - 2¹³ = 3717451 is a prime.

It is an Ulam number.

3725643 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3725643.

It is not an unprimeable number, because it can be changed into a prime (3725663) 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, 13071 + ... + 13352.

It is an arithmetic number, because the mean of its divisors is an integer number (634176).

Almost surely, 2^3725643 is an apocalyptic number.

3725643 is a deficient number, since it is larger than the sum of its proper divisors (1347765).

3725643 is a wasteful number, since it uses less digits than its factorization.

3725643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26473.

The product of its digits is 15120, while the sum is 30.

The square root of 3725643 is about 1930.1924774488. The cubic root of 3725643 is about 155.0245261224.

The spelling of 3725643 in words is "three million, seven hundred twenty-five thousand, six hundred forty-three".