66088551 has 8 divisors (see below), whose sum is σ = 88470144. Its totient is φ = 43883000.

The previous prime is 66088543. The next prime is 66088577. The reversal of 66088551 is 15588066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66088551 - 2³ = 66088543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66088511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43131 + ... + 44636.

It is an arithmetic number, because the mean of its divisors is an integer number (11058768).

Almost surely, 2^66088551 is an apocalyptic number.

66088551 is a deficient number, since it is larger than the sum of its proper divisors (22381593).

66088551 is a wasteful number, since it uses less digits than its factorization.

66088551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88021.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 66088551 is about 8129.4865151496. The cubic root of 66088551 is about 404.3046565680.

The spelling of 66088551 in words is "sixty-six million, eighty-eight thousand, five hundred fifty-one".