672475281 has 16 divisors (see below), whose sum is σ = 926320128. Its totient is φ = 433497600.

The previous prime is 672475267. The next prime is 672475291. The reversal of 672475281 is 182574276.

It is not a de Polignac number, because 672475281 - 2²¹ = 670378129 is a prime.

It is a super-2 number, since 2×672475281² = 904446007112057922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (672475231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155691 + ... + 159951.

It is an arithmetic number, because the mean of its divisors is an integer number (57895008).

Almost surely, 2^672475281 is an apocalyptic number.

It is an amenable number.

672475281 is a deficient number, since it is larger than the sum of its proper divisors (253844847).

672475281 is a wasteful number, since it uses less digits than its factorization.

672475281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992.

The product of its digits is 188160, while the sum is 42.

The square root of 672475281 is about 25932.1283546106. The cubic root of 672475281 is about 876.1102775515.

The spelling of 672475281 in words is "six hundred seventy-two million, four hundred seventy-five thousand, two hundred eighty-one".