257427707 has 8 divisors (see below), whose sum is σ = 270673920. Its totient is φ = 244352680.

The previous prime is 257427701. The next prime is 257427727. The reversal of 257427707 is 707724752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257427707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257427701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39707 + ... + 45732.

It is an arithmetic number, because the mean of its divisors is an integer number (33834240).

Almost surely, 2^257427707 is an apocalyptic number.

257427707 is a deficient number, since it is larger than the sum of its proper divisors (13246213).

257427707 is a wasteful number, since it uses less digits than its factorization.

257427707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85593.

The product of its (nonzero) digits is 192080, while the sum is 41.

The square root of 257427707 is about 16044.5538111847. The cubic root of 257427707 is about 636.1386205170.

The spelling of 257427707 in words is "two hundred fifty-seven million, four hundred twenty-seven thousand, seven hundred seven".