68749748 has 6 divisors (see below), whose sum is σ = 120312066. Its totient is φ = 34374872.

The previous prime is 68749729. The next prime is 68749753. The reversal of 68749748 is 84794786.

It can be written as a sum of positive squares in only one way, i.e., 63170704 + 5579044 = 7948^2 + 2362^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68749748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8593715 + ... + 8593722.

It is an arithmetic number, because the mean of its divisors is an integer number (20052011).

Almost surely, 2^68749748 is an apocalyptic number.

It is an amenable number.

68749748 is a deficient number, since it is larger than the sum of its proper divisors (51562318).

68749748 is a wasteful number, since it uses less digits than its factorization.

68749748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17187441 (or 17187439 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 53.

The square root of 68749748 is about 8291.5467797028. The cubic root of 68749748 is about 409.6601347689.

The spelling of 68749748 in words is "sixty-eight million, seven hundred forty-nine thousand, seven hundred forty-eight".