672807780706 has 4 divisors (see below), whose sum is σ = 1009211671062. Its totient is φ = 336403890352.

The previous prime is 672807780691. The next prime is 672807780719. The reversal of 672807780706 is 607087708276.

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

It can be written as a sum of positive squares in only one way, i.e., 489987400081 + 182820380625 = 699991^2 + 427575^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168201945175 + ... + 168201945178.

Almost surely, 2^672807780706 is an apocalyptic number.

672807780706 is a deficient number, since it is larger than the sum of its proper divisors (336403890356).

672807780706 is a wasteful number, since it uses less digits than its factorization.

672807780706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336403890355.

The product of its (nonzero) digits is 11063808, while the sum is 58.

The spelling of 672807780706 in words is "six hundred seventy-two billion, eight hundred seven million, seven hundred eighty thousand, seven hundred six".