65457249 has 48 divisors (see below), whose sum is σ = 105021504. Its totient is φ = 36241920.

The previous prime is 65457247. The next prime is 65457251. The reversal of 65457249 is 94275456.

It is an interprime number because it is at equal distance from previous prime (65457247) and next prime (65457251).

It is not a de Polignac number, because 65457249 - 2¹ = 65457247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65457249.

It is not an unprimeable number, because it can be changed into a prime (65457247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 674769 + ... + 674865.

It is an arithmetic number, because the mean of its divisors is an integer number (2187948).

Almost surely, 2^65457249 is an apocalyptic number.

It is an amenable number.

65457249 is a deficient number, since it is larger than the sum of its proper divisors (39564255).

65457249 is a wasteful number, since it uses less digits than its factorization.

65457249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 124 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 65457249 is about 8090.5654314145. The cubic root of 65457249 is about 403.0131802835.

The spelling of 65457249 in words is "sixty-five million, four hundred fifty-seven thousand, two hundred forty-nine".