65490860 has 12 divisors (see below), whose sum is σ = 137530848. Its totient is φ = 26196336.

The previous prime is 65490857. The next prime is 65490869. The reversal of 65490860 is 6809456.

It is not an unprimeable number, because it can be changed into a prime (65490869) 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 3 ways as a sum of consecutive naturals, for example, 1637252 + ... + 1637291.

It is an arithmetic number, because the mean of its divisors is an integer number (11460904).

Almost surely, 2^65490860 is an apocalyptic number.

It is an amenable number.

65490860 is an abundant number, since it is smaller than the sum of its proper divisors (72039988).

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

65490860 is a wasteful number, since it uses less digits than its factorization.

65490860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274552 (or 3274550 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 65490860 is about 8092.6423373333. The cubic root of 65490860 is about 403.0821482404.

The spelling of 65490860 in words is "sixty-five million, four hundred ninety thousand, eight hundred sixty".