672742947 has 8 divisors (see below), whose sum is σ = 899334144. Its totient is φ = 447323528.

The previous prime is 672742909. The next prime is 672742949. The reversal of 672742947 is 749247276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 672742947 - 2²⁰ = 671694371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672742896 and 672742905.

It is not an unprimeable number, because it can be changed into a prime (672742949) 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 7 ways as a sum of consecutive naturals, for example, 291603 + ... + 293900.

It is an arithmetic number, because the mean of its divisors is an integer number (112416768).

Almost surely, 2^672742947 is an apocalyptic number.

672742947 is a deficient number, since it is larger than the sum of its proper divisors (226591197).

672742947 is a wasteful number, since it uses less digits than its factorization.

672742947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585889.

The product of its digits is 1185408, while the sum is 48.

The square root of 672742947 is about 25937.2887364890. The cubic root of 672742947 is about 876.2265018122.

The spelling of 672742947 in words is "six hundred seventy-two million, seven hundred forty-two thousand, nine hundred forty-seven".