64290 has 16 divisors (see below), whose sum is σ = 154368. Its totient is φ = 17136.

The previous prime is 64283. The next prime is 64301. The reversal of 64290 is 9246.

Added to its reverse (9246) it gives a triangular number (73536 = T₃₈₃).

64290 = T₁₁₅ + T₁₁₆ + ... + T₁₂₃.

It is a plaindrome in base 13.

It is a nialpdrome in base 16.

It is an unprimeable number.

64290 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, 1042 + ... + 1101.

It is an arithmetic number, because the mean of its divisors is an integer number (9648).

2⁶⁴²⁹⁰ is an apocalyptic number.

64290 is an abundant number, since it is smaller than the sum of its proper divisors (90078).

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 (77184).

64290 is a wasteful number, since it uses less digits than its factorization.

64290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 64290 is about 253.5547278202. The cubic root of 64290 is about 40.0603256414.

Adding to 64290 its reverse (9246), we get a triangular number (73536 = T₃₈₃).

The spelling of 64290 in words is "sixty-four thousand, two hundred ninety".