681920083 has 16 divisors (see below), whose sum is σ = 751141440. Its totient is φ = 615250944.

The previous prime is 681920081. The next prime is 681920119. The reversal of 681920083 is 380029186.

It is a cyclic number.

It is not a de Polignac number, because 681920083 - 2¹ = 681920081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681920081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104058 + ... + 110416.

It is an arithmetic number, because the mean of its divisors is an integer number (46946340).

Almost surely, 2^681920083 is an apocalyptic number.

681920083 is a deficient number, since it is larger than the sum of its proper divisors (69221357).

681920083 is a wasteful number, since it uses less digits than its factorization.

681920083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6558.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 681920083 is about 26113.5995795294. The cubic root of 681920083 is about 880.1928309348.

The spelling of 681920083 in words is "six hundred eighty-one million, nine hundred twenty thousand, eighty-three".