68947820 has 24 divisors (see below), whose sum is σ = 145336128. Its totient is φ = 27475200.

The previous prime is 68947807. The next prime is 68947829. The reversal of 68947820 is 2874986.

It is not an unprimeable number, because it can be changed into a prime (68947829) 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, 941 + ... + 11780.

It is an arithmetic number, because the mean of its divisors is an integer number (6055672).

Almost surely, 2^68947820 is an apocalyptic number.

It is an amenable number.

68947820 is an abundant number, since it is smaller than the sum of its proper divisors (76388308).

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

68947820 is a wasteful number, since it uses less digits than its factorization.

68947820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13001 (or 12999 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 68947820 is about 8303.4824019805. The cubic root of 68947820 is about 410.0531757324.

The spelling of 68947820 in words is "sixty-eight million, nine hundred forty-seven thousand, eight hundred twenty".