64590 has 16 divisors (see below), whose sum is σ = 155088. Its totient is φ = 17216.

The previous prime is 64579. The next prime is 64591. The reversal of 64590 is 9546.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 64590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64591) by changing a digit.

64590 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047 + ... + 1106.

It is an arithmetic number, because the mean of its divisors is an integer number (9693).

2⁶⁴⁵⁹⁰ is an apocalyptic number.

64590 is an abundant number, since it is smaller than the sum of its proper divisors (90498).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77544).

64590 is a wasteful number, since it uses less digits than its factorization.

64590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 64590 is about 254.1456275445. The cubic root of 64590 is about 40.1225408766.

The spelling of 64590 in words is "sixty-four thousand, five hundred ninety".