66851054 has 8 divisors (see below), whose sum is σ = 100715160. Its totient is φ = 33279336.

The previous prime is 66851053. The next prime is 66851129. The reversal of 66851054 is 45015866.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66851053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72524 + ... + 73439.

It is an arithmetic number, because the mean of its divisors is an integer number (12589395).

Almost surely, 2^66851054 is an apocalyptic number.

66851054 is a deficient number, since it is larger than the sum of its proper divisors (33864106).

66851054 is a wasteful number, since it uses less digits than its factorization.

66851054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146194.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 66851054 is about 8176.2493846506. The cubic root of 66851054 is about 405.8536159243.

The spelling of 66851054 in words is "sixty-six million, eight hundred fifty-one thousand, fifty-four".