7140845 has 4 divisors (see below), whose sum is σ = 8569020. Its totient is φ = 5712672.

The previous prime is 7140841. The next prime is 7140853. The reversal of 7140845 is 5480417.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5654884 + 1485961 = 2378^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 7140845 - 2² = 7140841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140841) 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, 714080 + ... + 714089.

It is an arithmetic number, because the mean of its divisors is an integer number (2142255).

Almost surely, 2^7140845 is an apocalyptic number.

It is an amenable number.

7140845 is a deficient number, since it is larger than the sum of its proper divisors (1428175).

7140845 is a wasteful number, since it uses less digits than its factorization.

7140845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428174.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 7140845 is about 2672.2359551507. The cubic root of 7140845 is about 192.5675930619.

The spelling of 7140845 in words is "seven million, one hundred forty thousand, eight hundred forty-five".