706938677721 has 6 divisors (see below), whose sum is σ = 1021133645610. Its totient is φ = 471292451808.

The previous prime is 706938677689. The next prime is 706938677737. The reversal of 706938677721 is 127776839607.

It can be written as a sum of positive squares in only one way, i.e., 420059534400 + 286879143321 = 648120^2 + 535611^2 .

It is not a de Polignac number, because 706938677721 - 2⁵ = 706938677689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (706938677741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39274370976 + ... + 39274370993.

It is an arithmetic number, because the mean of its divisors is an integer number (170188940935).

Almost surely, 2^706938677721 is an apocalyptic number.

It is an amenable number.

706938677721 is a deficient number, since it is larger than the sum of its proper divisors (314194967889).

706938677721 is a wasteful number, since it uses less digits than its factorization.

706938677721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78548741975 (or 78548741972 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 63.

The spelling of 706938677721 in words is "seven hundred six billion, nine hundred thirty-eight million, six hundred seventy-seven thousand, seven hundred twenty-one".