66272158 has 8 divisors (see below), whose sum is σ = 99709560. Its totient is φ = 33035640.

The previous prime is 66272153. The next prime is 66272183. The reversal of 66272158 is 85127266.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66272153) 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, 49393 + ... + 50716.

It is an arithmetic number, because the mean of its divisors is an integer number (12463695).

Almost surely, 2^66272158 is an apocalyptic number.

66272158 is a deficient number, since it is larger than the sum of its proper divisors (33437402).

66272158 is a wasteful number, since it uses less digits than its factorization.

66272158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100442.

The product of its digits is 40320, while the sum is 37.

The square root of 66272158 is about 8140.7713393756. The cubic root of 66272158 is about 404.6787230040.

It can be divided in two parts, 66272 and 158, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 66272158 in words is "sixty-six million, two hundred seventy-two thousand, one hundred fifty-eight".