256377067 has 4 divisors (see below), whose sum is σ = 267523920. Its totient is φ = 245230216.

The previous prime is 256377053. The next prime is 256377097. The reversal of 256377067 is 760773652.

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 256377067 - 2¹¹ = 256375019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256377097) 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, 5573392 + ... + 5573437.

It is an arithmetic number, because the mean of its divisors is an integer number (66880980).

Almost surely, 2^256377067 is an apocalyptic number.

256377067 is a deficient number, since it is larger than the sum of its proper divisors (11146853).

256377067 is a wasteful number, since it uses less digits than its factorization.

256377067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146852.

The product of its (nonzero) digits is 370440, while the sum is 43.

The square root of 256377067 is about 16011.7790079679. The cubic root of 256377067 is about 635.2720160570.

The spelling of 256377067 in words is "two hundred fifty-six million, three hundred seventy-seven thousand, sixty-seven".