706713621781 has 16 divisors (see below), whose sum is σ = 715572000000. Its totient is φ = 697901230656.

The previous prime is 706713621751. The next prime is 706713621791. The reversal of 706713621781 is 187126317607.

It is not a de Polignac number, because 706713621781 - 2²⁵ = 706680067349 is a prime.

It is a super-2 number, since 2×706713621781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706713621751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63553540 + ... + 63564658.

It is an arithmetic number, because the mean of its divisors is an integer number (44723250000).

Almost surely, 2^706713621781 is an apocalyptic number.

It is an amenable number.

706713621781 is a deficient number, since it is larger than the sum of its proper divisors (8858378219).

706713621781 is a wasteful number, since it uses less digits than its factorization.

706713621781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13116.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 706713621781 in words is "seven hundred six billion, seven hundred thirteen million, six hundred twenty-one thousand, seven hundred eighty-one".