681244435 has 8 divisors (see below), whose sum is σ = 817633440. Its totient is φ = 544902144.

The previous prime is 681244427. The next prime is 681244453. The reversal of 681244435 is 534442186.

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

It is a cyclic number.

It is not a de Polignac number, because 681244435 - 2³ = 681244427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 681244394 and 681244403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50986 + ... + 62944.

It is an arithmetic number, because the mean of its divisors is an integer number (102204180).

Almost surely, 2^681244435 is an apocalyptic number.

681244435 is a deficient number, since it is larger than the sum of its proper divisors (136389005).

681244435 is a wasteful number, since it uses less digits than its factorization.

681244435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23357.

The product of its digits is 92160, while the sum is 37.

The square root of 681244435 is about 26100.6596659931. The cubic root of 681244435 is about 879.9020358406.

The spelling of 681244435 in words is "six hundred eighty-one million, two hundred forty-four thousand, four hundred thirty-five".