66554043 has 8 divisors (see below), whose sum is σ = 91798800. Its totient is φ = 42839328.

The previous prime is 66554039. The next prime is 66554053. The reversal of 66554043 is 34045566.

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

It is not a de Polignac number, because 66554043 - 2² = 66554039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66553995 and 66554013.

It is not an unprimeable number, because it can be changed into a prime (66554053) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 382408 + ... + 382581.

It is an arithmetic number, because the mean of its divisors is an integer number (11474850).

Almost surely, 2^66554043 is an apocalyptic number.

66554043 is a deficient number, since it is larger than the sum of its proper divisors (25244757).

66554043 is a wasteful number, since it uses less digits than its factorization.

66554043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765021.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 66554043 is about 8158.0661311367. The cubic root of 66554043 is about 405.2516710420.

The spelling of 66554043 in words is "sixty-six million, five hundred fifty-four thousand, forty-three".