68812820 has 24 divisors (see below), whose sum is σ = 144664800. Its totient is φ = 27495072.

The previous prime is 68812769. The next prime is 68812823. The reversal of 68812820 is 2821886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68812823) 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, 30491 + ... + 32669.

It is an arithmetic number, because the mean of its divisors is an integer number (6027700).

Almost surely, 2^68812820 is an apocalyptic number.

It is an amenable number.

68812820 is an abundant number, since it is smaller than the sum of its proper divisors (75851980).

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

68812820 is a wasteful number, since it uses less digits than its factorization.

68812820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767 (or 3765 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 68812820 is about 8295.3492994569. The cubic root of 68812820 is about 409.7853724965.

The spelling of 68812820 in words is "sixty-eight million, eight hundred twelve thousand, eight hundred twenty".