66069270 has 144 divisors (see below), whose sum is σ = 191309040. Its totient is φ = 16376256.

The previous prime is 66069253. The next prime is 66069287. The reversal of 66069270 is 7296066.

It is an interprime number because it is at equal distance from previous prime (66069253) and next prime (66069287).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1246564 + ... + 1246616.

It is an arithmetic number, because the mean of its divisors is an integer number (1328535).

Almost surely, 2^66069270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66069270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95654520).

66069270 is an abundant number, since it is smaller than the sum of its proper divisors (125239770).

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

66069270 is an equidigital number, since it uses as much as digits as its factorization.

66069270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 66069270 is about 8128.3005603878. The cubic root of 66069270 is about 404.2653347985.

It can be divided in two parts, 6606 and 9270, that added together give a square (15876 = 126²).

The spelling of 66069270 in words is "sixty-six million, sixty-nine thousand, two hundred seventy".