68629660 has 96 divisors (see below), whose sum is σ = 168376320. Its totient is φ = 23251200.

The previous prime is 68629643. The next prime is 68629661. The reversal of 68629660 is 6692686.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68629661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197607 + ... + 197953.

It is an arithmetic number, because the mean of its divisors is an integer number (1753920).

Almost surely, 2^68629660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68629660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84188160).

68629660 is an abundant number, since it is smaller than the sum of its proper divisors (99746660).

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

68629660 is a wasteful number, since it uses less digits than its factorization.

68629660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 68629660 is about 8284.3020225001. The cubic root of 68629660 is about 409.4214723771.

The spelling of 68629660 in words is "sixty-eight million, six hundred twenty-nine thousand, six hundred sixty".