257676061 has 16 divisors (see below), whose sum is σ = 279290880. Its totient is φ = 237029760.

The previous prime is 257676053. The next prime is 257676071. The reversal of 257676061 is 160676752.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 257676061 - 2³ = 257676053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257676011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122305 + ... + 124393.

It is an arithmetic number, because the mean of its divisors is an integer number (17455680).

Almost surely, 2^257676061 is an apocalyptic number.

It is an amenable number.

257676061 is a deficient number, since it is larger than the sum of its proper divisors (21614819).

257676061 is a wasteful number, since it uses less digits than its factorization.

257676061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 257676061 is about 16052.2914563622. The cubic root of 257676061 is about 636.3431268535.

The spelling of 257676061 in words is "two hundred fifty-seven million, six hundred seventy-six thousand, sixty-one".