68704518 has 24 divisors (see below), whose sum is σ = 138954312. Its totient is φ = 22646784.

The previous prime is 68704511. The next prime is 68704577. The reversal of 68704518 is 81540786.

It is a super-2 number, since 2×68704518² = 9440621587224648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68704511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55846 + ... + 57062.

It is an arithmetic number, because the mean of its divisors is an integer number (5789763).

Almost surely, 2^68704518 is an apocalyptic number.

68704518 is an abundant number, since it is smaller than the sum of its proper divisors (70249794).

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

68704518 is a wasteful number, since it uses less digits than its factorization.

68704518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 68704518 is about 8288.8188543362. The cubic root of 68704518 is about 409.5702775051.

The spelling of 68704518 in words is "sixty-eight million, seven hundred four thousand, five hundred eighteen".