681603495 has 8 divisors (see below), whose sum is σ = 1090565616. Its totient is φ = 363521856.

The previous prime is 681603463. The next prime is 681603497. The reversal of 681603495 is 594306186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681603495 - 2⁵ = 681603463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681603497) 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, 22720102 + ... + 22720131.

It is an arithmetic number, because the mean of its divisors is an integer number (136320702).

Almost surely, 2^681603495 is an apocalyptic number.

681603495 is a deficient number, since it is larger than the sum of its proper divisors (408962121).

681603495 is a wasteful number, since it uses less digits than its factorization.

681603495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45440241.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 681603495 is about 26107.5371301086. The cubic root of 681603495 is about 880.0565971691.

The spelling of 681603495 in words is "six hundred eighty-one million, six hundred three thousand, four hundred ninety-five".