66546151 has 16 divisors (see below), whose sum is σ = 80294400. Its totient is φ = 53876448.

The previous prime is 66546149. The next prime is 66546169. The reversal of 66546151 is 15164566.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66546151 - 2¹ = 66546149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66546251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67206 + ... + 68188.

It is an arithmetic number, because the mean of its divisors is an integer number (5018400).

Almost surely, 2^66546151 is an apocalyptic number.

66546151 is a deficient number, since it is larger than the sum of its proper divisors (13748249).

66546151 is a wasteful number, since it uses less digits than its factorization.

66546151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its digits is 21600, while the sum is 34.

The square root of 66546151 is about 8157.5824237331. The cubic root of 66546151 is about 405.2356521173.

The spelling of 66546151 in words is "sixty-six million, five hundred forty-six thousand, one hundred fifty-one".