257068786 has 16 divisors (see below), whose sum is σ = 415689624. Its totient is φ = 118525824.

The previous prime is 257068733. The next prime is 257068807. The reversal of 257068786 is 687860752.

257068786 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 145660761 + 111408025 = 12069^2 + 10555^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24016 + ... + 33028.

Almost surely, 2^257068786 is an apocalyptic number.

257068786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

257068786 is a deficient number, since it is larger than the sum of its proper divisors (158620838).

257068786 is a wasteful number, since it uses less digits than its factorization.

257068786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10125.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 257068786 is about 16033.3647747439. The cubic root of 257068786 is about 635.8428355905.

The spelling of 257068786 in words is "two hundred fifty-seven million, sixty-eight thousand, seven hundred eighty-six".