681042466 has 16 divisors (see below), whose sum is σ = 1147978944. Its totient is φ = 300660624.

The previous prime is 681042433. The next prime is 681042469. The reversal of 681042466 is 664240186.

It is a super-2 number, since 2×681042466² = 927637680990722312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (681042469) 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 7 ways as a sum of consecutive naturals, for example, 568836 + ... + 570031.

It is an arithmetic number, because the mean of its divisors is an integer number (71748684).

Almost surely, 2^681042466 is an apocalyptic number.

681042466 is a deficient number, since it is larger than the sum of its proper divisors (466936478).

681042466 is a wasteful number, since it uses less digits than its factorization.

681042466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138905.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 681042466 is about 26096.7903390436. The cubic root of 681042466 is about 879.8150721947.

The spelling of 681042466 in words is "six hundred eighty-one million, forty-two thousand, four hundred sixty-six".