66527572 has 12 divisors (see below), whose sum is σ = 116480980. Its totient is φ = 33247296.

The previous prime is 66527567. The next prime is 66527599. The reversal of 66527572 is 27572566.

It can be written as a sum of positive squares in 2 ways, for example, as 31315216 + 35212356 = 5596^2 + 5934^2 .

It is a super-3 number, since 3×66527572³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11704 + ... + 16432.

Almost surely, 2^66527572 is an apocalyptic number.

It is an amenable number.

66527572 is a deficient number, since it is larger than the sum of its proper divisors (49953408).

66527572 is a wasteful number, since it uses less digits than its factorization.

66527572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250 (or 8248 counting only the distinct ones).

The product of its digits is 176400, while the sum is 40.

The square root of 66527572 is about 8156.4435877409. The cubic root of 66527572 is about 405.1979360669.

The spelling of 66527572 in words is "sixty-six million, five hundred twenty-seven thousand, five hundred seventy-two".