66109748 has 12 divisors (see below), whose sum is σ = 118382880. Its totient is φ = 32286072.

The previous prime is 66109741. The next prime is 66109783. The reversal of 66109748 is 84790166.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66109741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192008 + ... + 192351.

It is an arithmetic number, because the mean of its divisors is an integer number (9865240).

Almost surely, 2^66109748 is an apocalyptic number.

It is an amenable number.

66109748 is a deficient number, since it is larger than the sum of its proper divisors (52273132).

66109748 is a wasteful number, since it uses less digits than its factorization.

66109748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384406 (or 384404 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 66109748 is about 8130.7901215073. The cubic root of 66109748 is about 404.3478770128.

The spelling of 66109748 in words is "sixty-six million, one hundred nine thousand, seven hundred forty-eight".