387637 has 4 divisors (see below), whose sum is σ = 388960. Its totient is φ = 386316.

The previous prime is 387631. The next prime is 387641. The reversal of 387637 is 736783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 736783 = 739 ⋅997.

It is a cyclic number.

It is not a de Polignac number, because 387637 - 2⁷ = 387509 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 (387631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3 + ... + 880.

It is an arithmetic number, because the mean of its divisors is an integer number (97240).

2³⁸⁷⁶³⁷ is an apocalyptic number.

It is an amenable number.

387637 is a deficient number, since it is larger than the sum of its proper divisors (1323).

387637 is an equidigital number, since it uses as much as digits as its factorization.

387637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322.

The product of its digits is 21168, while the sum is 34.

The square root of 387637 is about 622.6050112230. The cubic root of 387637 is about 72.9135775925.

It can be divided in two parts, 387 and 637, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 387637 in words is "three hundred eighty-seven thousand, six hundred thirty-seven".