68749684 has 12 divisors (see below), whose sum is σ = 122284708. Its totient is φ = 33811200.

The previous prime is 68749669. The next prime is 68749687. The reversal of 68749684 is 48694786.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9120400 + 59629284 = 3020^2 + 7722^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68749687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140637 + ... + 141124.

Almost surely, 2^68749684 is an apocalyptic number.

It is an amenable number.

68749684 is a deficient number, since it is larger than the sum of its proper divisors (53535024).

68749684 is a wasteful number, since it uses less digits than its factorization.

68749684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281826 (or 281824 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 68749684 is about 8291.5429203496. The cubic root of 68749684 is about 409.6600076496.

The spelling of 68749684 in words is "sixty-eight million, seven hundred forty-nine thousand, six hundred eighty-four".