68552749 has 16 divisors (see below), whose sum is σ = 73981440. Its totient is φ = 63391680.

The previous prime is 68552717. The next prime is 68552761. The reversal of 68552749 is 94725586.

It is a cyclic number.

It is not a de Polignac number, because 68552749 - 2⁵ = 68552717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68552699 and 68552708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68532749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67167 + ... + 68179.

It is an arithmetic number, because the mean of its divisors is an integer number (4623840).

Almost surely, 2^68552749 is an apocalyptic number.

It is an amenable number.

68552749 is a deficient number, since it is larger than the sum of its proper divisors (5428691).

68552749 is a wasteful number, since it uses less digits than its factorization.

68552749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its digits is 604800, while the sum is 46.

The square root of 68552749 is about 8279.6587490065. The cubic root of 68552749 is about 409.2684734886.

It can be divided in two parts, 6855 and 2749, that added together give a square (9604 = 98²).

The spelling of 68552749 in words is "sixty-eight million, five hundred fifty-two thousand, seven hundred forty-nine".