66826960 has 40 divisors (see below), whose sum is σ = 162132480. Its totient is φ = 25567872.

The previous prime is 66826951. The next prime is 66826973. The reversal of 66826960 is 6962866.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 16320 + ... + 19999.

It is an arithmetic number, because the mean of its divisors is an integer number (4053312).

Almost surely, 2^66826960 is an apocalyptic number.

It is an amenable number.

66826960 is an abundant number, since it is smaller than the sum of its proper divisors (95305520).

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

66826960 is a wasteful number, since it uses less digits than its factorization.

66826960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36355 (or 36349 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 66826960 is about 8174.7758379053. The cubic root of 66826960 is about 405.8048517365.

The spelling of 66826960 in words is "sixty-six million, eight hundred twenty-six thousand, nine hundred sixty".