678835164 has 48 divisors (see below), whose sum is σ = 1812384000. Its totient is φ = 193721856.

The previous prime is 678835153. The next prime is 678835181. The reversal of 678835164 is 461538876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73687 + ... + 82385.

It is an arithmetic number, because the mean of its divisors is an integer number (37758000).

Almost surely, 2^678835164 is an apocalyptic number.

It is an amenable number.

678835164 is an abundant number, since it is smaller than the sum of its proper divisors (1133548836).

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

678835164 is a wasteful number, since it uses less digits than its factorization.

678835164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642 (or 9640 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 678835164 is about 26054.4653370588. The cubic root of 678835164 is about 878.8635312268.

The spelling of 678835164 in words is "six hundred seventy-eight million, eight hundred thirty-five thousand, one hundred sixty-four".