256641014 has 8 divisors (see below), whose sum is σ = 439956048. Its totient is φ = 109989000.

The previous prime is 256641013. The next prime is 256641019. The reversal of 256641014 is 410146652.

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

It is a super-2 number, since 2×256641014² = 131729220133896392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256641013) 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, 9165737 + ... + 9165764.

It is an arithmetic number, because the mean of its divisors is an integer number (54994506).

Almost surely, 2^256641014 is an apocalyptic number.

256641014 is a deficient number, since it is larger than the sum of its proper divisors (183315034).

256641014 is a wasteful number, since it uses less digits than its factorization.

256641014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18331510.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 256641014 is about 16020.0191635341. The cubic root of 256641014 is about 635.4899510887.

Adding to 256641014 its reverse (410146652), we get a palindrome (666787666).

The spelling of 256641014 in words is "two hundred fifty-six million, six hundred forty-one thousand, fourteen".