257840616 has 32 divisors (see below), whose sum is σ = 703202400. Its totient is φ = 78133440.

The previous prime is 257840573. The next prime is 257840651. The reversal of 257840616 is 616048752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488071 + ... + 488598.

It is an arithmetic number, because the mean of its divisors is an integer number (21975075).

Almost surely, 2^257840616 is an apocalyptic number.

It is an amenable number.

257840616 is an abundant number, since it is smaller than the sum of its proper divisors (445361784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257840616 is a wasteful number, since it uses less digits than its factorization.

257840616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976689 (or 976685 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 257840616 is about 16057.4162305148. The cubic root of 257840616 is about 636.4785567939.

The spelling of 257840616 in words is "two hundred fifty-seven million, eight hundred forty thousand, six hundred sixteen".