276397 has 4 divisors (see below), whose sum is σ = 301536. Its totient is φ = 251260.

The previous prime is 276389. The next prime is 276401. The reversal of 276397 is 793672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 276397 - 2³ = 276389 is a prime.

It is a pancake number, because a pancake can be divided into 276397 parts by 743 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12553 + ... + 12574.

It is an arithmetic number, because the mean of its divisors is an integer number (75384).

2²⁷⁶³⁹⁷ is an apocalyptic number.

It is an amenable number.

276397 is a deficient number, since it is larger than the sum of its proper divisors (25139).

276397 is a wasteful number, since it uses less digits than its factorization.

276397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25138.

The product of its digits is 15876, while the sum is 34.

The square root of 276397 is about 525.7347239816. The cubic root of 276397 is about 65.1395031452.

The spelling of 276397 in words is "two hundred seventy-six thousand, three hundred ninety-seven".