66270156 has 24 divisors (see below), whose sum is σ = 157167024. Its totient is φ = 21727680.

The previous prime is 66270151. The next prime is 66270173. The reversal of 66270156 is 65107266.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (66270151) 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, 44535 + ... + 45998.

It is an arithmetic number, because the mean of its divisors is an integer number (6548626).

Almost surely, 2^66270156 is an apocalyptic number.

It is an amenable number.

66270156 is an abundant number, since it is smaller than the sum of its proper divisors (90896868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66270156 is a wasteful number, since it uses less digits than its factorization.

66270156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90601 (or 90599 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 66270156 is about 8140.6483771257. The cubic root of 66270156 is about 404.6746480149.

The spelling of 66270156 in words is "sixty-six million, two hundred seventy thousand, one hundred fifty-six".