672245047 has 4 divisors (see below), whose sum is σ = 674000640. Its totient is φ = 670489456.

The previous prime is 672245033. The next prime is 672245051. The reversal of 672245047 is 740542276.

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 672245047 - 2¹⁵ = 672212279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 672244997 and 672245015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672245087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877222 + ... + 877987.

It is an arithmetic number, because the mean of its divisors is an integer number (168500160).

Almost surely, 2^672245047 is an apocalyptic number.

672245047 is a deficient number, since it is larger than the sum of its proper divisors (1755593).

672245047 is a wasteful number, since it uses less digits than its factorization.

672245047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755592.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 672245047 is about 25927.6888094562. The cubic root of 672245047 is about 876.0102821051.

The spelling of 672245047 in words is "six hundred seventy-two million, two hundred forty-five thousand, forty-seven".