66434652 has 36 divisors (see below), whose sum is σ = 171105480. Its totient is φ = 21726432.

The previous prime is 66434651. The next prime is 66434677. The reversal of 66434652 is 25643466.

66434652 is a `hidden beast` number, since 6 + 643 + 4 + 6 + 5 + 2 = 666.

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

It is a super-2 number, since 2×66434652² = 8827125972722208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66434651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15502 + ... + 19317.

It is an arithmetic number, because the mean of its divisors is an integer number (4752930).

Almost surely, 2^66434652 is an apocalyptic number.

It is an amenable number.

66434652 is an abundant number, since it is smaller than the sum of its proper divisors (104670828).

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

66434652 is a wasteful number, since it uses less digits than its factorization.

66434652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34882 (or 34877 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 66434652 is about 8150.7454873772. The cubic root of 66434652 is about 405.0091996081.

The spelling of 66434652 in words is "sixty-six million, four hundred thirty-four thousand, six hundred fifty-two".