66441372 has 24 divisors (see below), whose sum is σ = 164149776. Its totient is φ = 20844288.

The previous prime is 66441367. The next prime is 66441377. The reversal of 66441372 is 27314466.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66441367) and next prime (66441377).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66441377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162643 + ... + 163050.

It is an arithmetic number, because the mean of its divisors is an integer number (6839574).

Almost surely, 2^66441372 is an apocalyptic number.

It is an amenable number.

66441372 is an abundant number, since it is smaller than the sum of its proper divisors (97708404).

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

66441372 is a wasteful number, since it uses less digits than its factorization.

66441372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325717 (or 325715 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 66441372 is about 8151.1577091846. The cubic root of 66441372 is about 405.0228549821.

The spelling of 66441372 in words is "sixty-six million, four hundred forty-one thousand, three hundred seventy-two".