236864 has 14 divisors (see below), whose sum is σ = 470154. Its totient is φ = 118400.

The previous prime is 236813. The next prime is 236867. The reversal of 236864 is 468632.

It can be written as a sum of positive squares in only one way, i.e., 193600 + 43264 = 440^2 + 208^2 .

It is a super-2 number, since 2×236864² = 112209108992, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 236864.

It is not an unprimeable number, because it can be changed into a prime (236867) by changing a digit.

236864 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 as a sum of consecutive naturals, namely, 1787 + ... + 1914.

2²³⁶⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

236864 is a deficient number, since it is larger than the sum of its proper divisors (233290).

236864 is an equidigital number, since it uses as much as digits as its factorization.

236864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713 (or 3703 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 236864 is about 486.6867575762. The cubic root of 236864 is about 61.8727880718.

The spelling of 236864 in words is "two hundred thirty-six thousand, eight hundred sixty-four".