705777013 has 4 divisors (see below), whose sum is σ = 705842860. Its totient is φ = 705711168.

The previous prime is 705777001. The next prime is 705777019. The reversal of 705777013 is 310777507.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 310777507 = 257 ⋅1209251.

It can be written as a sum of positive squares in 2 ways, for example, as 496309284 + 209467729 = 22278^2 + 14473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705777013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705777019) 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, 12708 + ... + 39661.

It is an arithmetic number, because the mean of its divisors is an integer number (176460715).

Almost surely, 2^705777013 is an apocalyptic number.

It is an amenable number.

705777013 is a deficient number, since it is larger than the sum of its proper divisors (65847).

705777013 is a wasteful number, since it uses less digits than its factorization.

705777013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65846.

The product of its (nonzero) digits is 36015, while the sum is 37.

The square root of 705777013 is about 26566.4640665633. The cubic root of 705777013 is about 890.3399000506.

The spelling of 705777013 in words is "seven hundred five million, seven hundred seventy-seven thousand, thirteen".