672751543 has 4 divisors (see below), whose sum is σ = 672806728. Its totient is φ = 672696360.

The previous prime is 672751507. The next prime is 672751549. The reversal of 672751543 is 345157276.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672751543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 672751496 and 672751505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672751549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321 + ... + 36682.

It is an arithmetic number, because the mean of its divisors is an integer number (168201682).

Almost surely, 2^672751543 is an apocalyptic number.

672751543 is a deficient number, since it is larger than the sum of its proper divisors (55185).

672751543 is a wasteful number, since it uses less digits than its factorization.

672751543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55184.

The product of its digits is 176400, while the sum is 40.

The square root of 672751543 is about 25937.4544433335. The cubic root of 672751543 is about 876.2302338027.

The spelling of 672751543 in words is "six hundred seventy-two million, seven hundred fifty-one thousand, five hundred forty-three".