64495 has 4 divisors (see below), whose sum is σ = 77400. Its totient is φ = 51592.

The previous prime is 64489. The next prime is 64499. The reversal of 64495 is 59446.

64495 = T₅₀ + T₅₁ + ... + T₇₉.

64495 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59446 = 2 ⋅29723.

It is a cyclic number.

It is not a de Polignac number, because 64495 - 2¹⁵ = 31727 is a prime.

64495 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6445 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (19350).

2⁶⁴⁴⁹⁵ is an apocalyptic number.

64495 is a deficient number, since it is larger than the sum of its proper divisors (12905).

64495 is a wasteful number, since it uses less digits than its factorization.

64495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12904.

The product of its digits is 4320, while the sum is 28.

The square root of 64495 is about 253.9586580528. The cubic root of 64495 is about 40.1028602674.

The spelling of 64495 in words is "sixty-four thousand, four hundred ninety-five".