66320170 has 16 divisors (see below), whose sum is σ = 136430208. Its totient is φ = 22738320.

The previous prime is 66320167. The next prime is 66320173. The reversal of 66320170 is 7102366.

It is an interprime number because it is at equal distance from previous prime (66320167) and next prime (66320173).

It is a super-3 number, since 3×66320170³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66320173) 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, 473646 + ... + 473785.

It is an arithmetic number, because the mean of its divisors is an integer number (8526888).

Almost surely, 2^66320170 is an apocalyptic number.

66320170 is an abundant number, since it is smaller than the sum of its proper divisors (70110038).

66320170 is a wasteful number, since it uses less digits than its factorization.

66320170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947445.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 66320170 is about 8143.7196660985. The cubic root of 66320170 is about 404.7764248913.

The spelling of 66320170 in words is "sixty-six million, three hundred twenty thousand, one hundred seventy".