68976720 has 60 divisors (see below), whose sum is σ = 231649236. Its totient is φ = 18393600.

The previous prime is 68976697. The next prime is 68976737. The reversal of 68976720 is 2767986.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38638656 + 30338064 = 6216^2 + 5508^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47181 + ... + 48620.

Almost surely, 2^68976720 is an apocalyptic number.

68976720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68976720 is an abundant number, since it is smaller than the sum of its proper divisors (162672516).

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

68976720 is a wasteful number, since it uses less digits than its factorization.

68976720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95820 (or 95811 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 68976720 is about 8305.2224533723. Note that the first 3 decimals coincide. The cubic root of 68976720 is about 410.1104600256.

It can be divided in two parts, 68976 and 720, that added together give a palindrome (69696).

The spelling of 68976720 in words is "sixty-eight million, nine hundred seventy-six thousand, seven hundred twenty".