672633609 has 16 divisors (see below), whose sum is σ = 908069760. Its totient is φ = 442823040.

The previous prime is 672633583. The next prime is 672633617. The reversal of 672633609 is 906336276.

It is not a de Polignac number, because 672633609 - 2¹² = 672629513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (672633109) 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, 385479 + ... + 387219.

It is an arithmetic number, because the mean of its divisors is an integer number (56754360).

Almost surely, 2^672633609 is an apocalyptic number.

It is an amenable number.

672633609 is a deficient number, since it is larger than the sum of its proper divisors (235436151).

672633609 is a wasteful number, since it uses less digits than its factorization.

672633609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280.

The product of its (nonzero) digits is 244944, while the sum is 42.

The square root of 672633609 is about 25935.1809131920. The cubic root of 672633609 is about 876.1790294731.

The spelling of 672633609 in words is "six hundred seventy-two million, six hundred thirty-three thousand, six hundred nine".