66206052 has 96 divisors (see below), whose sum is σ = 195471360. Its totient is φ = 19182240.

The previous prime is 66205967. The next prime is 66206069. The reversal of 66206052 is 25060266.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26113 + ... + 28535.

It is an arithmetic number, because the mean of its divisors is an integer number (2036160).

Almost surely, 2^66206052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66206052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97735680).

66206052 is an abundant number, since it is smaller than the sum of its proper divisors (129265308).

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

66206052 is a wasteful number, since it uses less digits than its factorization.

66206052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2462 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66206052 is about 8136.7101459988. The cubic root of 66206052 is about 404.5441235368.

The spelling of 66206052 in words is "sixty-six million, two hundred six thousand, fifty-two".