68983947 has 32 divisors (see below), whose sum is σ = 105792000. Its totient is φ = 44393184.

The previous prime is 68983939. The next prime is 68983949. The reversal of 68983947 is 74938986.

It is not a de Polignac number, because 68983947 - 2³ = 68983939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68983893 and 68983902.

It is not an unprimeable number, because it can be changed into a prime (68983949) 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, 198628 + ... + 198974.

It is an arithmetic number, because the mean of its divisors is an integer number (3306000).

Almost surely, 2^68983947 is an apocalyptic number.

68983947 is a deficient number, since it is larger than the sum of its proper divisors (36808053).

68983947 is a wasteful number, since it uses less digits than its factorization.

68983947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592 (or 586 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 68983947 is about 8305.6575296601. The cubic root of 68983947 is about 410.1247825622.

The spelling of 68983947 in words is "sixty-eight million, nine hundred eighty-three thousand, nine hundred forty-seven".