68713220 has 12 divisors (see below), whose sum is σ = 144297804. Its totient is φ = 27485280.

The previous prime is 68713219. The next prime is 68713241. The reversal of 68713220 is 2231786.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7529536 + 61183684 = 2744^2 + 7822^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1717811 + ... + 1717850.

It is an arithmetic number, because the mean of its divisors is an integer number (12024817).

Almost surely, 2^68713220 is an apocalyptic number.

It is an amenable number.

68713220 is an abundant number, since it is smaller than the sum of its proper divisors (75584584).

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

68713220 is a wasteful number, since it uses less digits than its factorization.

68713220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435670 (or 3435668 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 68713220 is about 8289.3437617220. The cubic root of 68713220 is about 409.5875686052.

The spelling of 68713220 in words is "sixty-eight million, seven hundred thirteen thousand, two hundred twenty".