65378275 has 24 divisors (see below), whose sum is σ = 84398864. Its totient is φ = 50198400.

The previous prime is 65378273. The next prime is 65378279. The reversal of 65378275 is 57287356.

It is not a de Polignac number, because 65378275 - 2¹ = 65378273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65378273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65077 + ... + 66073.

Almost surely, 2^65378275 is an apocalyptic number.

65378275 is a deficient number, since it is larger than the sum of its proper divisors (19020589).

65378275 is a wasteful number, since it uses less digits than its factorization.

65378275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1106 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The square root of 65378275 is about 8085.6833353774. The cubic root of 65378275 is about 402.8510369409.

The spelling of 65378275 in words is "sixty-five million, three hundred seventy-eight thousand, two hundred seventy-five".