681101459 has 8 divisors (see below), whose sum is σ = 686582352. Its totient is φ = 675642240.

The previous prime is 681101441. The next prime is 681101489. The reversal of 681101459 is 954101186.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681101459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681101489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60887 + ... + 71199.

It is an arithmetic number, because the mean of its divisors is an integer number (85822794).

Almost surely, 2^681101459 is an apocalyptic number.

681101459 is a deficient number, since it is larger than the sum of its proper divisors (5480893).

681101459 is a wasteful number, since it uses less digits than its factorization.

681101459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10837.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 681101459 is about 26097.9205876637. The cubic root of 681101459 is about 879.8404751295.

The spelling of 681101459 in words is "six hundred eighty-one million, one hundred one thousand, four hundred fifty-nine".