706530778331 has 4 divisors (see below), whose sum is σ = 807463746672. Its totient is φ = 605597809992.

The previous prime is 706530778313. The next prime is 706530778337. The reversal of 706530778331 is 133877035607.

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

It is not a de Polignac number, because 706530778331 - 2³⁸ = 431652871387 is a prime.

It is a super-2 number, since 2×706530778331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 706530778331.

It is not an unprimeable number, because it can be changed into a prime (706530778337) 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, 50466484160 + ... + 50466484173.

It is an arithmetic number, because the mean of its divisors is an integer number (201865936668).

Almost surely, 2^706530778331 is an apocalyptic number.

706530778331 is a deficient number, since it is larger than the sum of its proper divisors (100932968341).

706530778331 is a wasteful number, since it uses less digits than its factorization.

706530778331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100932968340.

The product of its (nonzero) digits is 2222640, while the sum is 50.

The spelling of 706530778331 in words is "seven hundred six billion, five hundred thirty million, seven hundred seventy-eight thousand, three hundred thirty-one".