145864 has 8 divisors (see below), whose sum is σ = 273510. Its totient is φ = 72928.

The previous prime is 145861. The next prime is 145879. The reversal of 145864 is 468541.

It can be written as a sum of positive squares in only one way, i.e., 116964 + 28900 = 342^2 + 170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (145861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9109 + ... + 9124.

2¹⁴⁵⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

145864 is a deficient number, since it is larger than the sum of its proper divisors (127646).

145864 is a wasteful number, since it uses less digits than its factorization.

145864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18239 (or 18235 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 145864 is about 381.9214578942. The cubic root of 145864 is about 52.6400192780.

The spelling of 145864 in words is "one hundred forty-five thousand, eight hundred sixty-four".