65378180 has 48 divisors (see below), whose sum is σ = 162328320. Its totient is φ = 21641088.

The previous prime is 65378113. The next prime is 65378191. The reversal of 65378180 is 8187356.

It is a super-2 number, since 2×65378180² = 8548612840224800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3992 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (3381840).

Almost surely, 2^65378180 is an apocalyptic number.

It is an amenable number.

65378180 is an abundant number, since it is smaller than the sum of its proper divisors (96950140).

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

65378180 is a wasteful number, since it uses less digits than its factorization.

65378180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16148 (or 16146 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 65378180 is about 8085.6774607945. The cubic root of 65378180 is about 402.8508418156.

The spelling of 65378180 in words is "sixty-five million, three hundred seventy-eight thousand, one hundred eighty".