678517340 has 12 divisors (see below), whose sum is σ = 1424886456. Its totient is φ = 271406928.

The previous prime is 678517309. The next prime is 678517351. The reversal of 678517340 is 43715876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16962914 + ... + 16962953.

It is an arithmetic number, because the mean of its divisors is an integer number (118740538).

Almost surely, 2^678517340 is an apocalyptic number.

It is an amenable number.

678517340 is an abundant number, since it is smaller than the sum of its proper divisors (746369116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678517340 is a wasteful number, since it uses less digits than its factorization.

678517340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33925876 (or 33925874 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 678517340 is about 26048.3653997712. The cubic root of 678517340 is about 878.7263513725.

The spelling of 678517340 in words is "six hundred seventy-eight million, five hundred seventeen thousand, three hundred forty".