978722683 has 4 divisors (see below), whose sum is σ = 978827200. Its totient is φ = 978618168.

The previous prime is 978722659. The next prime is 978722707. The reversal of 978722683 is 386227879.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 386227879 = 17 ⋅22719287.

It is an interprime number because it is at equal distance from previous prime (978722659) and next prime (978722707).

It is a cyclic number.

It is not a de Polignac number, because 978722683 - 2¹⁷ = 978591611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 978722683.

It is not an unprimeable number, because it can be changed into a prime (978720683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36660 + ... + 57457.

It is an arithmetic number, because the mean of its divisors is an integer number (244706800).

Almost surely, 2^978722683 is an apocalyptic number.

978722683 is a deficient number, since it is larger than the sum of its proper divisors (104517).

978722683 is a wasteful number, since it uses less digits than its factorization.

978722683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104516.

The product of its digits is 2032128, while the sum is 52.

The square root of 978722683 is about 31284.5438355748. The cubic root of 978722683 is about 992.8566551261.

The spelling of 978722683 in words is "nine hundred seventy-eight million, seven hundred twenty-two thousand, six hundred eighty-three".