68666652 has 36 divisors (see below), whose sum is σ = 173844216. Its totient is φ = 22853280.

The previous prime is 68666651. The next prime is 68666681. The reversal of 68666652 is 25666686.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 68666598 and 68666607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68666651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32863 + ... + 34889.

It is an arithmetic number, because the mean of its divisors is an integer number (4829006).

Almost surely, 2^68666652 is an apocalyptic number.

It is an amenable number.

68666652 is an abundant number, since it is smaller than the sum of its proper divisors (105177564).

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

68666652 is a wasteful number, since it uses less digits than its factorization.

68666652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978 (or 2973 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 68666652 is about 8286.5343781342. The cubic root of 68666652 is about 409.4950197751.

The spelling of 68666652 in words is "sixty-eight million, six hundred sixty-six thousand, six hundred fifty-two".