66476064 has 24 divisors (see below), whose sum is σ = 174499920. Its totient is φ = 22158656.

The previous prime is 66476023. The next prime is 66476071. The reversal of 66476064 is 46067466.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346134 + ... + 346325.

It is an arithmetic number, because the mean of its divisors is an integer number (7270830).

Almost surely, 2^66476064 is an apocalyptic number.

It is an amenable number.

66476064 is an abundant number, since it is smaller than the sum of its proper divisors (108023856).

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

66476064 is a wasteful number, since it uses less digits than its factorization.

66476064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692472 (or 692464 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 66476064 is about 8153.2854727404. The cubic root of 66476064 is about 405.0933362080.

The spelling of 66476064 in words is "sixty-six million, four hundred seventy-six thousand, sixty-four".