387771 has 8 divisors (see below), whose sum is σ = 544320. Its totient is φ = 244872.

The previous prime is 387763. The next prime is 387781. The reversal of 387771 is 177783.

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

It is not a de Polignac number, because 387771 - 2³ = 387763 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (387721) 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 7 ways as a sum of consecutive naturals, for example, 3345 + ... + 3458.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2³⁸⁷⁷⁷¹ is an apocalyptic number.

387771 is a deficient number, since it is larger than the sum of its proper divisors (156549).

387771 is a wasteful number, since it uses less digits than its factorization.

387771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825.

The product of its digits is 8232, while the sum is 33.

The square root of 387771 is about 622.7126142933. The cubic root of 387771 is about 72.9219783160.

The spelling of 387771 in words is "three hundred eighty-seven thousand, seven hundred seventy-one".