68236780 has 12 divisors (see below), whose sum is σ = 143297280. Its totient is φ = 27294704.

The previous prime is 68236747. The next prime is 68236781. The reversal of 68236780 is 8763286.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68236781) 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, 1705900 + ... + 1705939.

It is an arithmetic number, because the mean of its divisors is an integer number (11941440).

Almost surely, 2^68236780 is an apocalyptic number.

It is an amenable number.

68236780 is an abundant number, since it is smaller than the sum of its proper divisors (75060500).

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

68236780 is a wasteful number, since it uses less digits than its factorization.

68236780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411848 (or 3411846 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 68236780 is about 8260.5556713819. Note that the first 3 decimals coincide. The cubic root of 68236780 is about 408.6387134808.

The spelling of 68236780 in words is "sixty-eight million, two hundred thirty-six thousand, seven hundred eighty".