387065689 has 8 divisors (see below), whose sum is σ = 406846080. Its totient is φ = 367531296.

The previous prime is 387065687. The next prime is 387065713. The reversal of 387065689 is 986560783.

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 387065689 - 2¹ = 387065687 is a prime.

It is a super-3 number, since 3×387065689³ (a number of 27 digits) contains 333 as substring.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (387065681) 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, 58269 + ... + 64570.

It is an arithmetic number, because the mean of its divisors is an integer number (50855760).

Almost surely, 2^387065689 is an apocalyptic number.

It is an amenable number.

387065689 is a deficient number, since it is larger than the sum of its proper divisors (19780391).

387065689 is a wasteful number, since it uses less digits than its factorization.

387065689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122999.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 387065689 is about 19673.9850818282. The cubic root of 387065689 is about 728.7773924331. Note that the first 3 decimals are identical.

The spelling of 387065689 in words is "three hundred eighty-seven million, sixty-five thousand, six hundred eighty-nine".