3125643 has 8 divisors (see below), whose sum is σ = 4238400. Its totient is φ = 2048328.

The previous prime is 3125611. The next prime is 3125651. The reversal of 3125643 is 3465213.

It is a happy number.

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

It is not a de Polignac number, because 3125643 - 2⁵ = 3125611 is a prime.

3125643 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8653 + ... + 9006.

It is an arithmetic number, because the mean of its divisors is an integer number (529800).

Almost surely, 2^3125643 is an apocalyptic number.

3125643 is a deficient number, since it is larger than the sum of its proper divisors (1112757).

3125643 is a wasteful number, since it uses less digits than its factorization.

3125643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17721.

The product of its digits is 2160, while the sum is 24.

The square root of 3125643 is about 1767.9488114762. The cubic root of 3125643 is about 146.2109136545.

The spelling of 3125643 in words is "three million, one hundred twenty-five thousand, six hundred forty-three".