68666356 has 24 divisors (see below), whose sum is σ = 134142624. Its totient is φ = 30485280.

The previous prime is 68666347. The next prime is 68666359. The reversal of 68666356 is 65366686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68666359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16255 + ... + 20038.

It is an arithmetic number, because the mean of its divisors is an integer number (5589276).

Almost surely, 2^68666356 is an apocalyptic number.

It is an amenable number.

68666356 is a deficient number, since it is larger than the sum of its proper divisors (65476268).

68666356 is a wasteful number, since it uses less digits than its factorization.

68666356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36351 (or 36349 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 68666356 is about 8286.5165178137. The cubic root of 68666356 is about 409.4944313735.

The spelling of 68666356 in words is "sixty-eight million, six hundred sixty-six thousand, three hundred fifty-six".