65590340 has 12 divisors (see below), whose sum is σ = 137739756. Its totient is φ = 26236128.

The previous prime is 65590331. The next prime is 65590363. The reversal of 65590340 is 4309556.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29398084 + 36192256 = 5422^2 + 6016^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65590297 and 65590306.

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, 1639739 + ... + 1639778.

It is an arithmetic number, because the mean of its divisors is an integer number (11478313).

Almost surely, 2^65590340 is an apocalyptic number.

It is an amenable number.

65590340 is an abundant number, since it is smaller than the sum of its proper divisors (72149416).

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

65590340 is a wasteful number, since it uses less digits than its factorization.

65590340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279526 (or 3279524 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 65590340 is about 8098.7863288273. The cubic root of 65590340 is about 403.2861376525.

Adding to 65590340 its reverse (4309556), we get a palindrome (69899896).

The spelling of 65590340 in words is "sixty-five million, five hundred ninety thousand, three hundred forty".