705749947507 has 4 divisors (see below), whose sum is σ = 769909033656. Its totient is φ = 641590861360.

The previous prime is 705749947459. The next prime is 705749947517.

It is a happy number.

705749947507 is nontrivially palindromic in base 10.

705749947507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705749947507 is a prime.

It is a super-2 number, since 2×705749947507² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705749947517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32079543058 + ... + 32079543079.

It is an arithmetic number, because the mean of its divisors is an integer number (192477258414).

Almost surely, 2^705749947507 is an apocalyptic number.

705749947507 is a deficient number, since it is larger than the sum of its proper divisors (64159086149).

705749947507 is a wasteful number, since it uses less digits than its factorization.

705749947507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64159086148.

The product of its (nonzero) digits is 77792400, while the sum is 64.

The spelling of 705749947507 in words is "seven hundred five billion, seven hundred forty-nine million, nine hundred forty-seven thousand, five hundred seven".