65275040 has 24 divisors (see below), whose sum is σ = 154212660. Its totient is φ = 26109952.

The previous prime is 65275031. The next prime is 65275061. The reversal of 65275040 is 4057256.

It can be written as a sum of positive squares in 2 ways, for example, as 53523856 + 11751184 = 7316^2 + 3428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65274994 and 65275012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203825 + ... + 204144.

Almost surely, 2^65275040 is an apocalyptic number.

It is an amenable number.

65275040 is an abundant number, since it is smaller than the sum of its proper divisors (88937620).

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

65275040 is a wasteful number, since it uses less digits than its factorization.

65275040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407984 (or 407976 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 65275040 is about 8079.2969991207. The cubic root of 65275040 is about 402.6388857540.

The spelling of 65275040 in words is "sixty-five million, two hundred seventy-five thousand, forty".