7814945 has 16 divisors (see below), whose sum is σ = 9781248. Its totient is φ = 5987520.

The previous prime is 7814941. The next prime is 7814953. The reversal of 7814945 is 5494187.

It is not a de Polignac number, because 7814945 - 2² = 7814941 is a prime.

It is a super-2 number, since 2×7814945² = 122146730706050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

Its product of digits (40320) is a multiple of the sum of its prime divisors (560).

It is a junction number, because it is equal to n+sod(n) for n = 7814899 and 7814908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7814941) 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, 19487 + ... + 19883.

It is an arithmetic number, because the mean of its divisors is an integer number (611328).

Almost surely, 2^7814945 is an apocalyptic number.

It is an amenable number.

7814945 is a deficient number, since it is larger than the sum of its proper divisors (1966303).

7814945 is a wasteful number, since it uses less digits than its factorization.

7814945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560.

The product of its digits is 40320, while the sum is 38.

The square root of 7814945 is about 2795.5223125563. The cubic root of 7814945 is about 198.4458290467.

The spelling of 7814945 in words is "seven million, eight hundred fourteen thousand, nine hundred forty-five".