672647874667 has 4 divisors (see below), whose sum is σ = 678600510840. Its totient is φ = 666695238496.

The previous prime is 672647874659. The next prime is 672647874673. The reversal of 672647874667 is 766478746276.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 672647874667 - 2³ = 672647874659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 672647874596 and 672647874605.

It is not an unprimeable number, because it can be changed into a prime (672647871667) 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, 2976317917 + ... + 2976318142.

It is an arithmetic number, because the mean of its divisors is an integer number (169650127710).

Almost surely, 2^672647874667 is an apocalyptic number.

672647874667 is a deficient number, since it is larger than the sum of its proper divisors (5952636173).

672647874667 is a wasteful number, since it uses less digits than its factorization.

672647874667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952636172.

The product of its digits is 796594176, while the sum is 70.

The spelling of 672647874667 in words is "six hundred seventy-two billion, six hundred forty-seven million, eight hundred seventy-four thousand, six hundred sixty-seven".