387166257 has 16 divisors (see below), whose sum is σ = 573903360. Its totient is φ = 257965200.

The previous prime is 387166243. The next prime is 387166271. The reversal of 387166257 is 752661783.

387166257 is a `hidden beast` number, since 3 + 8 + 7 + 16 + 625 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (387166243) and next prime (387166271).

It is not a de Polignac number, because 387166257 - 2¹² = 387162161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387166057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68032 + ... + 73502.

It is an arithmetic number, because the mean of its divisors is an integer number (35868960).

Almost surely, 2^387166257 is an apocalyptic number.

It is an amenable number.

387166257 is a deficient number, since it is larger than the sum of its proper divisors (186737103).

387166257 is a wasteful number, since it uses less digits than its factorization.

387166257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8101 (or 8095 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 387166257 is about 19676.5407782974. The cubic root of 387166257 is about 728.8405043202.

The spelling of 387166257 in words is "three hundred eighty-seven million, one hundred sixty-six thousand, two hundred fifty-seven".