263974 has 8 divisors (see below), whose sum is σ = 400680. Its totient is φ = 130416.

The previous prime is 263957. The next prime is 263983. The reversal of 263974 is 479362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

263974 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 564 + ... + 919.

It is an arithmetic number, because the mean of its divisors is an integer number (50085).

2²⁶³⁹⁷⁴ is an apocalyptic number.

263974 is a deficient number, since it is larger than the sum of its proper divisors (136706).

263974 is a wasteful number, since it uses less digits than its factorization.

263974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574.

The product of its digits is 9072, while the sum is 31.

The square root of 263974 is about 513.7840013079. The cubic root of 263974 is about 64.1485805739.

The spelling of 263974 in words is "two hundred sixty-three thousand, nine hundred seventy-four".