384651 has 12 divisors (see below), whose sum is σ = 563680. Its totient is φ = 252720.

The previous prime is 384641. The next prime is 384673. The reversal of 384651 is 156483.

384651 is a `hidden beast` number, since 3 + 8 + 4 + 651 = 666.

It is not a de Polignac number, because 384651 - 2⁵ = 384619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441 + ... + 981.

2³⁸⁴⁶⁵¹ is an apocalyptic number.

384651 is a deficient number, since it is larger than the sum of its proper divisors (179029).

384651 is a wasteful number, since it uses less digits than its factorization.

384651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 623 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 384651 is about 620.2023863224. The cubic root of 384651 is about 72.7258750205.

It can be divided in two parts, 384 and 651, that added together give a triangular number (1035 = T₄₅).

The spelling of 384651 in words is "three hundred eighty-four thousand, six hundred fifty-one".