6311945 has 8 divisors (see below), whose sum is σ = 7678536. Its totient is φ = 4980096.

The previous prime is 6311939. The next prime is 6311953. The reversal of 6311945 is 5491136.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 6285049 = 164^2 + 2507^2 .

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 6311945 - 2⁶ = 6311881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8282 + ... + 9011.

It is an arithmetic number, because the mean of its divisors is an integer number (959817).

Almost surely, 2^6311945 is an apocalyptic number.

It is an amenable number.

6311945 is a deficient number, since it is larger than the sum of its proper divisors (1366591).

6311945 is a wasteful number, since it uses less digits than its factorization.

6311945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17371.

The product of its digits is 3240, while the sum is 29.

The square root of 6311945 is about 2512.3584537243. The cubic root of 6311945 is about 184.8081283164.

The spelling of 6311945 in words is "six million, three hundred eleven thousand, nine hundred forty-five".