66746328 has 32 divisors (see below), whose sum is σ = 182036160. Its totient is φ = 20226080.

The previous prime is 66746321. The next prime is 66746347. The reversal of 66746328 is 82364766.

It is a self number, because there is not a number n which added to its sum of digits gives 66746328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66746321) 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, 126150 + ... + 126677.

It is an arithmetic number, because the mean of its divisors is an integer number (5688630).

Almost surely, 2^66746328 is an apocalyptic number.

It is an amenable number.

66746328 is an abundant number, since it is smaller than the sum of its proper divisors (115289832).

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

66746328 is a wasteful number, since it uses less digits than its factorization.

66746328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252847 (or 252843 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 66746328 is about 8169.8425933429. The cubic root of 66746328 is about 405.6415741924.

The spelling of 66746328 in words is "sixty-six million, seven hundred forty-six thousand, three hundred twenty-eight".