65257460 has 24 divisors (see below), whose sum is σ = 137218536. Its totient is φ = 26069120.

The previous prime is 65257399. The next prime is 65257483. The reversal of 65257460 is 6475256.

It can be written as a sum of positive squares in 4 ways, for example, as 583696 + 64673764 = 764^2 + 8042^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65257460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18650 + ... + 21870.

It is an arithmetic number, because the mean of its divisors is an integer number (5717439).

Almost surely, 2^65257460 is an apocalyptic number.

It is an amenable number.

65257460 is an abundant number, since it is smaller than the sum of its proper divisors (71961076).

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

65257460 is a wasteful number, since it uses less digits than its factorization.

65257460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243 (or 4241 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 65257460 is about 8078.2089599118. The cubic root of 65257460 is about 402.6027360141.

The spelling of 65257460 in words is "sixty-five million, two hundred fifty-seven thousand, four hundred sixty".