270638 has 4 divisors (see below), whose sum is σ = 405960. Its totient is φ = 135318.

The previous prime is 270631. The next prime is 270653. The reversal of 270638 is 836072.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67658 + ... + 67661.

It is an arithmetic number, because the mean of its divisors is an integer number (101490).

2²⁷⁰⁶³⁸ is an apocalyptic number.

270638 is a deficient number, since it is larger than the sum of its proper divisors (135322).

270638 is a wasteful number, since it uses less digits than its factorization.

270638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135321.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 270638 is about 520.2287958197. The cubic root of 270638 is about 64.6839091490.

It can be divided in two parts, 2706 and 38, that added together give a cube (2744 = 14³).

The spelling of 270638 in words is "two hundred seventy thousand, six hundred thirty-eight".