387713 has 4 divisors (see below), whose sum is σ = 391380. Its totient is φ = 384048.

The previous prime is 387707. The next prime is 387721. The reversal of 387713 is 317783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150544 + 237169 = 388^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 387713 - 2¹⁰ = 386689 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 (387743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670 + ... + 1887.

It is an arithmetic number, because the mean of its divisors is an integer number (97845).

2³⁸⁷⁷¹³ is an apocalyptic number.

It is an amenable number.

387713 is a deficient number, since it is larger than the sum of its proper divisors (3667).

387713 is a wasteful number, since it uses less digits than its factorization.

387713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666.

The product of its digits is 3528, while the sum is 29.

The square root of 387713 is about 622.6660421125. Note that the first 3 decimals coincide. The cubic root of 387713 is about 72.9183424195.

The spelling of 387713 in words is "three hundred eighty-seven thousand, seven hundred thirteen".