3012643 has 4 divisors (see below), whose sum is σ = 3028608. Its totient is φ = 2996680.

The previous prime is 3012641. The next prime is 3012649. The reversal of 3012643 is 3462103.

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 3012643 - 2¹ = 3012641 is a prime.

It is a Duffinian number.

3012643 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3012643.

It is not an unprimeable number, because it can be changed into a prime (3012641) 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, 7696 + ... + 8077.

It is an arithmetic number, because the mean of its divisors is an integer number (757152).

Almost surely, 2^3012643 is an apocalyptic number.

3012643 is a deficient number, since it is larger than the sum of its proper divisors (15965).

3012643 is a wasteful number, since it uses less digits than its factorization.

3012643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15964.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 3012643 is about 1735.6966900931. The cubic root of 3012643 is about 144.4272770963.

Adding to 3012643 its reverse (3462103), we get a palindrome (6474746).

It can be divided in two parts, 3012 and 643, that added together give a triangular number (3655 = T₈₅).

The spelling of 3012643 in words is "three million, twelve thousand, six hundred forty-three".