66122604 has 36 divisors (see below), whose sum is σ = 167881896. Its totient is φ = 21943488.

The previous prime is 66122593. The next prime is 66122611. The reversal of 66122604 is 40622166.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4447 + ... + 12329.

It is an arithmetic number, because the mean of its divisors is an integer number (4663386).

Almost surely, 2^66122604 is an apocalyptic number.

It is an amenable number.

66122604 is an abundant number, since it is smaller than the sum of its proper divisors (101759292).

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

66122604 is a wasteful number, since it uses less digits than its factorization.

66122604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126 (or 8121 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 66122604 is about 8131.5806581500. The cubic root of 66122604 is about 404.3740857518.

It can be divided in two parts, 6612 and 2604, that added together give a square (9216 = 96²).

The spelling of 66122604 in words is "sixty-six million, one hundred twenty-two thousand, six hundred four".