68209772 has 12 divisors (see below), whose sum is σ = 125649720. Its totient is φ = 32309856.

The previous prime is 68209747. The next prime is 68209777. The reversal of 68209772 is 27790286.

It is not an unprimeable number, because it can be changed into a prime (68209777) 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, 448673 + ... + 448824.

It is an arithmetic number, because the mean of its divisors is an integer number (10470810).

Almost surely, 2^68209772 is an apocalyptic number.

It is an amenable number.

68209772 is a deficient number, since it is larger than the sum of its proper divisors (57439948).

68209772 is a wasteful number, since it uses less digits than its factorization.

68209772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897520 (or 897518 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 68209772 is about 8258.9207527376. The cubic root of 68209772 is about 408.5847935334.

The spelling of 68209772 in words is "sixty-eight million, two hundred nine thousand, seven hundred seventy-two".