66605052 has 24 divisors (see below), whose sum is σ = 156406096. Its totient is φ = 22059648.

The previous prime is 66605027. The next prime is 66605057. The reversal of 66605052 is 25050666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66605057) 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, 15793 + ... + 19560.

Almost surely, 2^66605052 is an apocalyptic number.

It is an amenable number.

66605052 is an abundant number, since it is smaller than the sum of its proper divisors (89801044).

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

66605052 is a wasteful number, since it uses less digits than its factorization.

66605052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35517 (or 35515 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 66605052 is about 8161.1918247276. The cubic root of 66605052 is about 405.3551769185.

The spelling of 66605052 in words is "sixty-six million, six hundred five thousand, fifty-two".