256606683 has 4 divisors (see below), whose sum is σ = 342142248. Its totient is φ = 171071120.

The previous prime is 256606673. The next prime is 256606697. The reversal of 256606683 is 386606652.

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 256606683 - 2⁴ = 256606667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256606633) 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, 42767778 + ... + 42767783.

It is an arithmetic number, because the mean of its divisors is an integer number (85535562).

Almost surely, 2^256606683 is an apocalyptic number.

256606683 is a deficient number, since it is larger than the sum of its proper divisors (85535565).

256606683 is an equidigital number, since it uses as much as digits as its factorization.

256606683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85535564.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 256606683 is about 16018.9476246101. The cubic root of 256606683 is about 635.4616132195.

The spelling of 256606683 in words is "two hundred fifty-six million, six hundred six thousand, six hundred eighty-three".