7681445705 has 16 divisors (see below), whose sum is σ = 9573431040. Its totient is φ = 5912458752.

The previous prime is 7681445693. The next prime is 7681445719. The reversal of 7681445705 is 5075441867.

It is a cyclic number.

It is not a de Polignac number, because 7681445705 - 2²⁴ = 7664668489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 7681445705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263144 + ... + 290873.

It is an arithmetic number, because the mean of its divisors is an integer number (598339440).

Almost surely, 2^7681445705 is an apocalyptic number.

It is an amenable number.

7681445705 is a deficient number, since it is larger than the sum of its proper divisors (1891985335).

7681445705 is a wasteful number, since it uses less digits than its factorization.

7681445705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554128.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 7681445705 is about 87643.8572006048. The cubic root of 7681445705 is about 1973.0934508334.

The spelling of 7681445705 in words is "seven billion, six hundred eighty-one million, four hundred forty-five thousand, seven hundred five".