7122643 has 16 divisors (see below), whose sum is σ = 8436960. Its totient is φ = 5939200.

The previous prime is 7122641. The next prime is 7122667. The reversal of 7122643 is 3462217.

It is a cyclic number.

It is not a de Polignac number, because 7122643 - 2¹ = 7122641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7122641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7203 + ... + 8131.

It is an arithmetic number, because the mean of its divisors is an integer number (527310).

Almost surely, 2^7122643 is an apocalyptic number.

7122643 is a deficient number, since it is larger than the sum of its proper divisors (1314317).

7122643 is a wasteful number, since it uses less digits than its factorization.

7122643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its digits is 2016, while the sum is 25.

The square root of 7122643 is about 2668.8280199368. The cubic root of 7122643 is about 192.4038357040.

The spelling of 7122643 in words is "seven million, one hundred twenty-two thousand, six hundred forty-three".