66272700 has 72 divisors (see below), whose sum is σ = 206511088. Its totient is φ = 16312320.

The previous prime is 66272677. The next prime is 66272707. The reversal of 66272700 is 727266.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66272707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4597 + ... + 12396.

Almost surely, 2^66272700 is an apocalyptic number.

66272700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66272700 is an abundant number, since it is smaller than the sum of its proper divisors (140238388).

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

66272700 is a wasteful number, since it uses less digits than its factorization.

66272700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17023 (or 17016 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 66272700 is about 8140.8046285364. The cubic root of 66272700 is about 404.6798262087.

Adding to 66272700 its reverse (727266), we get a palindrome (66999966).

It can be divided in two parts, 6627 and 2700, that multiplied together give a square (17892900 = 4230²).

The spelling of 66272700 in words is "sixty-six million, two hundred seventy-two thousand, seven hundred".