672799811 has 4 divisors (see below), whose sum is σ = 679331952. Its totient is φ = 666267672.

The previous prime is 672799733. The next prime is 672799819. The reversal of 672799811 is 118997276.

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 672799811 - 2²² = 668605507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672799811.

It is not an unprimeable number, because it can be changed into a prime (672799819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3265916 + ... + 3266121.

It is an arithmetic number, because the mean of its divisors is an integer number (169832988).

Almost surely, 2^672799811 is an apocalyptic number.

672799811 is a deficient number, since it is larger than the sum of its proper divisors (6532141).

672799811 is a wasteful number, since it uses less digits than its factorization.

672799811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6532140.

The product of its digits is 381024, while the sum is 50.

The square root of 672799811 is about 25938.3848957486. The cubic root of 672799811 is about 876.2511889730.

The spelling of 672799811 in words is "six hundred seventy-two million, seven hundred ninety-nine thousand, eight hundred eleven".