68698820 has 24 divisors (see below), whose sum is σ = 144423384. Its totient is φ = 27449856.

The previous prime is 68698811. The next prime is 68698823. The reversal of 68698820 is 2889686.

It can be written as a sum of positive squares in 4 ways, for example, as 11303044 + 57395776 = 3362^2 + 7576^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68698823) 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, 34574 + ... + 36506.

It is an arithmetic number, because the mean of its divisors is an integer number (6017641).

Almost surely, 2^68698820 is an apocalyptic number.

It is an amenable number.

68698820 is an abundant number, since it is smaller than the sum of its proper divisors (75724564).

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

68698820 is a wasteful number, since it uses less digits than its factorization.

68698820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719 (or 3717 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 68698820 is about 8288.4751311686. The cubic root of 68698820 is about 409.5589546400.

The spelling of 68698820 in words is "sixty-eight million, six hundred ninety-eight thousand, eight hundred twenty".