66109344 has 48 divisors (see below), whose sum is σ = 198330048. Its totient is φ = 18888192.

The previous prime is 66109339. The next prime is 66109397. The reversal of 66109344 is 44390166.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×66109344² = 8740890728220672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48517 + ... + 49860.

It is an arithmetic number, because the mean of its divisors is an integer number (4131876).

Almost surely, 2^66109344 is an apocalyptic number.

It is an amenable number.

66109344 is an abundant number, since it is smaller than the sum of its proper divisors (132220704).

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

66109344 is a wasteful number, since it uses less digits than its factorization.

66109344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98397 (or 98389 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 66109344 is about 8130.7652776353. The cubic root of 66109344 is about 404.3470533477.

It can be divided in two parts, 661093 and 44, that multiplied together give a palindrome (29088092).

The spelling of 66109344 in words is "sixty-six million, one hundred nine thousand, three hundred forty-four".