46664172 has 18 divisors (see below), whose sum is σ = 117956748. Its totient is φ = 15554712.

The previous prime is 46664143. The next prime is 46664173. The reversal of 46664172 is 27146664.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1296227 = 46664172 / (4 + 6 + 6 + 6 + 4 + 1 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (46664173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 648078 + ... + 648149.

Almost surely, 2^46664172 is an apocalyptic number.

It is an amenable number.

46664172 is an abundant number, since it is smaller than the sum of its proper divisors (71292576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

46664172 is a wasteful number, since it uses less digits than its factorization.

46664172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296237 (or 1296232 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 46664172 is about 6831.1179172958. The cubic root of 46664172 is about 360.0210172915.

It can be divided in two parts, 46664 and 172, that multiplied together give a palindrome (8026208).

The spelling of 46664172 in words is "forty-six million, six hundred sixty-four thousand, one hundred seventy-two".