66150851 has 8 divisors (see below), whose sum is σ = 71695344. Its totient is φ = 60671520.

The previous prime is 66150841. The next prime is 66150853. The reversal of 66150851 is 15805166.

It is a happy number.

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

It is not a de Polignac number, because 66150851 - 2¹⁰ = 66149827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66150853) 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, 14165 + ... + 18246.

It is an arithmetic number, because the mean of its divisors is an integer number (8961918).

Almost surely, 2^66150851 is an apocalyptic number.

66150851 is a deficient number, since it is larger than the sum of its proper divisors (5544493).

66150851 is a wasteful number, since it uses less digits than its factorization.

66150851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32581.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 66150851 is about 8133.3173428805. The cubic root of 66150851 is about 404.4316592490.

The spelling of 66150851 in words is "sixty-six million, one hundred fifty thousand, eight hundred fifty-one".