235678 has 4 divisors (see below), whose sum is σ = 353520. Its totient is φ = 117838.

The previous prime is 235673. The next prime is 235679. The reversal of 235678 is 876532.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235673) by changing a digit.

235678 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, 58918 + ... + 58921.

It is an arithmetic number, because the mean of its divisors is an integer number (88380).

235678 is a Friedman number, since it can be written as (7^6+38*5)*2, using all its digits and the basic arithmetic operations.

2²³⁵⁶⁷⁸ is an apocalyptic number.

235678 is a deficient number, since it is larger than the sum of its proper divisors (117842).

235678 is a wasteful number, since it uses less digits than its factorization.

235678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117841.

The product of its digits is 10080, while the sum is 31.

The square root of 235678 is about 485.4667856816. The cubic root of 235678 is about 61.7693476392.

It can be divided in two parts, 235 and 678, that multiplied together give a triangular number (159330 = T₅₆₄).

The spelling of 235678 in words is "two hundred thirty-five thousand, six hundred seventy-eight".