66550527 has 6 divisors (see below), whose sum is σ = 96128552. Its totient is φ = 44367012.

The previous prime is 66550513. The next prime is 66550537. The reversal of 66550527 is 72505566.

It is not a de Polignac number, because 66550527 - 2⁷ = 66550399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66550491 and 66550500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66550537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3697243 + ... + 3697260.

Almost surely, 2^66550527 is an apocalyptic number.

66550527 is a deficient number, since it is larger than the sum of its proper divisors (29578025).

66550527 is a wasteful number, since it uses less digits than its factorization.

66550527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7394509 (or 7394506 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 66550527 is about 8157.8506360438. The cubic root of 66550527 is about 405.2445345361.

The spelling of 66550527 in words is "sixty-six million, five hundred fifty thousand, five hundred twenty-seven".