672232185 has 12 divisors (see below), whose sum is σ = 1165202532. Its totient is φ = 358523808.

The previous prime is 672232181. The next prime is 672232229. The reversal of 672232185 is 581232276.

It can be written as a sum of positive squares in 2 ways, for example, as 425019456 + 247212729 = 20616^2 + 15723^2 .

It is not a de Polignac number, because 672232185 - 2² = 672232181 is a prime.

It is a super-2 number, since 2×672232185² = 903792221099748450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (672232181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7469202 + ... + 7469291.

It is an arithmetic number, because the mean of its divisors is an integer number (97100211).

Almost surely, 2^672232185 is an apocalyptic number.

It is an amenable number.

672232185 is a deficient number, since it is larger than the sum of its proper divisors (492970347).

672232185 is a wasteful number, since it uses less digits than its factorization.

672232185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14938504 (or 14938501 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 672232185 is about 25927.4407722783. The cubic root of 672232185 is about 876.0046951960.

Subtracting from 672232185 its reverse (581232276), we obtain a palindrome (90999909).

The spelling of 672232185 in words is "six hundred seventy-two million, two hundred thirty-two thousand, one hundred eighty-five".