65378570 has 16 divisors (see below), whose sum is σ = 117813960. Its totient is φ = 26121984.

The previous prime is 65378539. The next prime is 65378609. The reversal of 65378570 is 7587356.

65378570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 65334889 + 43681 = 8083^2 + 209^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7166 + ... + 13494.

Almost surely, 2^65378570 is an apocalyptic number.

65378570 is a deficient number, since it is larger than the sum of its proper divisors (52435390).

65378570 is a wasteful number, since it uses less digits than its factorization.

65378570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7369.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 65378570 is about 8085.7015774761. The cubic root of 65378570 is about 402.8516428551.

The spelling of 65378570 in words is "sixty-five million, three hundred seventy-eight thousand, five hundred seventy".