68768540 has 24 divisors (see below), whose sum is σ = 149073792. Its totient is φ = 26619840.

The previous prime is 68768503. The next prime is 68768549. The reversal of 68768540 is 4586786.

It is a super-2 number, since 2×68768540² = 9458224187463200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68768491 and 68768500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68768549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54839 + ... + 56078.

It is an arithmetic number, because the mean of its divisors is an integer number (6211408).

Almost surely, 2^68768540 is an apocalyptic number.

It is an amenable number.

68768540 is an abundant number, since it is smaller than the sum of its proper divisors (80305252).

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

68768540 is a wasteful number, since it uses less digits than its factorization.

68768540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110957 (or 110955 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 68768540 is about 8292.6799045906. The cubic root of 68768540 is about 409.6974567575.

The spelling of 68768540 in words is "sixty-eight million, seven hundred sixty-eight thousand, five hundred forty".