66265528 has 32 divisors (see below), whose sum is σ = 143337600. Its totient is φ = 28131552.

The previous prime is 66265519. The next prime is 66265547. The reversal of 66265528 is 82556266.

It is a happy number.

It is a super-2 number, since 2×66265528² = 8782240402237568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463 + ... + 11521.

It is an arithmetic number, because the mean of its divisors is an integer number (4479300).

Almost surely, 2^66265528 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 66265528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71668800).

66265528 is an abundant number, since it is smaller than the sum of its proper divisors (77072072).

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

66265528 is a wasteful number, since it uses less digits than its factorization.

66265528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11179 (or 11175 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 66265528 is about 8140.3641196202. The cubic root of 66265528 is about 404.6652275961.

The spelling of 66265528 in words is "sixty-six million, two hundred sixty-five thousand, five hundred twenty-eight".