678342627 has 8 divisors (see below), whose sum is σ = 1004952080. Its totient is φ = 452228400.

The previous prime is 678342607. The next prime is 678342629. The reversal of 678342627 is 726243876.

It is a de Polignac number, because none of the positive numbers 2^k-678342627 is a prime.

It is a super-2 number, since 2×678342627² = 920297439210522258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678342629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12561874 + ... + 12561927.

It is an arithmetic number, because the mean of its divisors is an integer number (125619010).

Almost surely, 2^678342627 is an apocalyptic number.

678342627 is a deficient number, since it is larger than the sum of its proper divisors (326609453).

678342627 is a wasteful number, since it uses less digits than its factorization.

678342627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25123810 (or 25123804 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 678342627 is about 26045.0115569182. The cubic root of 678342627 is about 878.6509231376.

The spelling of 678342627 in words is "six hundred seventy-eight million, three hundred forty-two thousand, six hundred twenty-seven".