66532572 has 36 divisors (see below), whose sum is σ = 173607616. Its totient is φ = 21461760.

The previous prime is 66532519. The next prime is 66532597. The reversal of 66532572 is 27523566.

It is a happy number.

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

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

It is a congruent number.

It is an unprimeable number.

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, 28693 + ... + 30924.

Almost surely, 2^66532572 is an apocalyptic number.

66532572 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66532572 is an abundant number, since it is smaller than the sum of its proper divisors (107075044).

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

66532572 is a wasteful number, since it uses less digits than its factorization.

66532572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59658 (or 59653 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 66532572 is about 8156.7500881172. The cubic root of 66532572 is about 405.2080869406.

The spelling of 66532572 in words is "sixty-six million, five hundred thirty-two thousand, five hundred seventy-two".