672945771 has 4 divisors (see below), whose sum is σ = 897261032. Its totient is φ = 448630512.

The previous prime is 672945761. The next prime is 672945773. The reversal of 672945771 is 177549276.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 672945771 - 2¹⁰ = 672944747 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 672945771.

It is not an unprimeable number, because it can be changed into a prime (672945773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112157626 + ... + 112157631.

It is an arithmetic number, because the mean of its divisors is an integer number (224315258).

Almost surely, 2^672945771 is an apocalyptic number.

672945771 is a deficient number, since it is larger than the sum of its proper divisors (224315261).

672945771 is a wasteful number, since it uses less digits than its factorization.

672945771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224315260.

The product of its digits is 740880, while the sum is 48.

The square root of 672945771 is about 25941.1983339244. The cubic root of 672945771 is about 876.3145502551.

The spelling of 672945771 in words is "six hundred seventy-two million, nine hundred forty-five thousand, seven hundred seventy-one".