678974035556 has 12 divisors (see below), whose sum is σ = 1188210331392. Its totient is φ = 339485369448.

The previous prime is 678974035547. The next prime is 678974035609. The reversal of 678974035556 is 655530479876.

It is a super-2 number, since 2×678974035556² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 678974035492 and 678974035501.

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, 1404941 + ... + 1825323.

It is an arithmetic number, because the mean of its divisors is an integer number (99017527616).

Almost surely, 2^678974035556 is an apocalyptic number.

It is an amenable number.

678974035556 is a deficient number, since it is larger than the sum of its proper divisors (509236295836).

678974035556 is a wasteful number, since it uses less digits than its factorization.

678974035556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824170 (or 824168 counting only the distinct ones).

The product of its (nonzero) digits is 190512000, while the sum is 65.

The spelling of 678974035556 in words is "six hundred seventy-eight billion, nine hundred seventy-four million, thirty-five thousand, five hundred fifty-six".