256041767 has 4 divisors (see below), whose sum is σ = 258576936. Its totient is φ = 253506600.

The previous prime is 256041683. The next prime is 256041787. The reversal of 256041767 is 767140652.

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

It is a cyclic number.

It is not a de Polignac number, because 256041767 - 2¹⁴ = 256025383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256041767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256041787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267433 + ... + 1267634.

It is an arithmetic number, because the mean of its divisors is an integer number (64644234).

Almost surely, 2^256041767 is an apocalyptic number.

256041767 is a deficient number, since it is larger than the sum of its proper divisors (2535169).

256041767 is a wasteful number, since it uses less digits than its factorization.

256041767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535168.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 256041767 is about 16001.3051655170. The cubic root of 256041767 is about 634.9949506698.

The spelling of 256041767 in words is "two hundred fifty-six million, forty-one thousand, seven hundred sixty-seven".