276638 has 4 divisors (see below), whose sum is σ = 414960. Its totient is φ = 138318.

The previous prime is 276637. The next prime is 276671. The reversal of 276638 is 836672.

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

It is a Curzon 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 276638.

It is not an unprimeable number, because it can be changed into a prime (276637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69158 + ... + 69161.

It is an arithmetic number, because the mean of its divisors is an integer number (103740).

2²⁷⁶⁶³⁸ is an apocalyptic number.

276638 is a deficient number, since it is larger than the sum of its proper divisors (138322).

276638 is a wasteful number, since it uses less digits than its factorization.

276638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138321.

The product of its digits is 12096, while the sum is 32.

The square root of 276638 is about 525.9638770866. The cubic root of 276638 is about 65.1584300990.

The spelling of 276638 in words is "two hundred seventy-six thousand, six hundred thirty-eight".