672448811 has 4 divisors (see below), whose sum is σ = 683472624. Its totient is φ = 661425000.

The previous prime is 672448747. The next prime is 672448837. The reversal of 672448811 is 118844276.

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 672448811 - 2⁶ = 672448747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672448111) 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, 5511815 + ... + 5511936.

It is an arithmetic number, because the mean of its divisors is an integer number (170868156).

Almost surely, 2^672448811 is an apocalyptic number.

672448811 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

672448811 is a deficient number, since it is larger than the sum of its proper divisors (11023813).

672448811 is a wasteful number, since it uses less digits than its factorization.

672448811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023812.

The product of its digits is 86016, while the sum is 41.

The square root of 672448811 is about 25931.6179788304. The cubic root of 672448811 is about 876.0987822376.

The spelling of 672448811 in words is "six hundred seventy-two million, four hundred forty-eight thousand, eight hundred eleven".