66527604 has 72 divisors (see below), whose sum is σ = 197582112. Its totient is φ = 18607680.

The previous prime is 66527603. The next prime is 66527621. The reversal of 66527604 is 40672566.

It is a super-3 number, since 3×66527604³ (a number of 24 digits) contains 333 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 (66527603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1314 + ... + 11609.

It is an arithmetic number, because the mean of its divisors is an integer number (2744196).

Almost surely, 2^66527604 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 66527604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98791056).

66527604 is an abundant number, since it is smaller than the sum of its proper divisors (131054508).

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

66527604 is a wasteful number, since it uses less digits than its factorization.

66527604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12957 (or 12952 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 66527604 is about 8156.4455493800. The cubic root of 66527604 is about 405.1980010342.

The spelling of 66527604 in words is "sixty-six million, five hundred twenty-seven thousand, six hundred four".