66572344 has 8 divisors (see below), whose sum is σ = 124823160. Its totient is φ = 33286168.

The previous prime is 66572329. The next prime is 66572347. The reversal of 66572344 is 44327566.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66572347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160764 + ... + 4160779.

It is an arithmetic number, because the mean of its divisors is an integer number (15602895).

Almost surely, 2^66572344 is an apocalyptic number.

It is an amenable number.

66572344 is a deficient number, since it is larger than the sum of its proper divisors (58250816).

66572344 is a wasteful number, since it uses less digits than its factorization.

66572344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321549 (or 8321545 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 66572344 is about 8159.1877046677. The cubic root of 66572344 is about 405.2888129436.

The spelling of 66572344 in words is "sixty-six million, five hundred seventy-two thousand, three hundred forty-four".