65490705 has 48 divisors (see below), whose sum is σ = 132412800. Its totient is φ = 29931552.

The previous prime is 65490661. The next prime is 65490721. The reversal of 65490705 is 50709456.

It is not a de Polignac number, because 65490705 - 2⁸ = 65490449 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 65490705.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13314 + ... + 17556.

It is an arithmetic number, because the mean of its divisors is an integer number (2758600).

Almost surely, 2^65490705 is an apocalyptic number.

It is an amenable number.

65490705 is an abundant number, since it is smaller than the sum of its proper divisors (66922095).

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

65490705 is a wasteful number, since it uses less digits than its factorization.

65490705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275 (or 4258 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 65490705 is about 8092.6327607275. The cubic root of 65490705 is about 403.0818302429.

The spelling of 65490705 in words is "sixty-five million, four hundred ninety thousand, seven hundred five".