66253170 has 16 divisors (see below), whose sum is σ = 159007680. Its totient is φ = 17667504.

The previous prime is 66253163. The next prime is 66253177. The reversal of 66253170 is 7135266.

It is an interprime number because it is at equal distance from previous prime (66253163) and next prime (66253177).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2208439 = 66253170 / (6 + 6 + 2 + 5 + 3 + 1 + 7 + 0).

It is not an unprimeable number, because it can be changed into a prime (66253177) 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, 1104190 + ... + 1104249.

It is an arithmetic number, because the mean of its divisors is an integer number (9937980).

Almost surely, 2^66253170 is an apocalyptic number.

66253170 is an abundant number, since it is smaller than the sum of its proper divisors (92754510).

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

66253170 is a wasteful number, since it uses less digits than its factorization.

66253170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208449.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 66253170 is about 8139.6050272725. The cubic root of 66253170 is about 404.6400704043.

The spelling of 66253170 in words is "sixty-six million, two hundred fifty-three thousand, one hundred seventy".