68748764 has 36 divisors (see below), whose sum is σ = 147326760. Its totient is φ = 27911520.

The previous prime is 68748761. The next prime is 68748773. The reversal of 68748764 is 46784786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68748761) 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 11 ways as a sum of consecutive naturals, for example, 5507 + ... + 12954.

It is an arithmetic number, because the mean of its divisors is an integer number (4092410).

Almost surely, 2^68748764 is an apocalyptic number.

It is an amenable number.

68748764 is an abundant number, since it is smaller than the sum of its proper divisors (78577996).

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

68748764 is a wasteful number, since it uses less digits than its factorization.

68748764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18498 (or 18489 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

The square root of 68748764 is about 8291.4874419491. The cubic root of 68748764 is about 409.6581803011.

The spelling of 68748764 in words is "sixty-eight million, seven hundred forty-eight thousand, seven hundred sixty-four".