387666593 has 8 divisors (see below), whose sum is σ = 389460480. Its totient is φ = 385877520.

The previous prime is 387666551. The next prime is 387666637. The reversal of 387666593 is 395666783.

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

It is a cyclic number.

It is not a de Polignac number, because 387666593 - 2¹² = 387662497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387666493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356096 + ... + 357182.

It is an arithmetic number, because the mean of its divisors is an integer number (48682560).

Almost surely, 2^387666593 is an apocalyptic number.

It is an amenable number.

387666593 is a deficient number, since it is larger than the sum of its proper divisors (1793887).

387666593 is a wasteful number, since it uses less digits than its factorization.

387666593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407.

The product of its digits is 4898880, while the sum is 53.

The square root of 387666593 is about 19689.2506967634. The cubic root of 387666593 is about 729.1543300240.

The spelling of 387666593 in words is "three hundred eighty-seven million, six hundred sixty-six thousand, five hundred ninety-three".