672706214321 has 4 divisors (see below), whose sum is σ = 672954356544. Its totient is φ = 672458072100.

The previous prime is 672706214287. The next prime is 672706214419. The reversal of 672706214321 is 123412607276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 672706214321 - 2¹⁴ = 672706197937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (672706213321) 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, 124067045 + ... + 124072466.

It is an arithmetic number, because the mean of its divisors is an integer number (168238589136).

Almost surely, 2^672706214321 is an apocalyptic number.

It is an amenable number.

672706214321 is a deficient number, since it is larger than the sum of its proper divisors (248142223).

672706214321 is a wasteful number, since it uses less digits than its factorization.

672706214321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248142222.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 672706214321 in words is "six hundred seventy-two billion, seven hundred six million, two hundred fourteen thousand, three hundred twenty-one".