385578684 has 48 divisors (see below), whose sum is σ = 1000742400. Its totient is φ = 128385648.

The previous prime is 385578643. The next prime is 385578757. The reversal of 385578684 is 486875583.

385578684 is a `hidden beast` number, since 3 + 8 + 5 + 578 + 68 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 385578684.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156349 + ... + 158795.

It is an arithmetic number, because the mean of its divisors is an integer number (20848800).

Almost surely, 2^385578684 is an apocalyptic number.

It is an amenable number.

385578684 is an abundant number, since it is smaller than the sum of its proper divisors (615163716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385578684 is a wasteful number, since it uses less digits than its factorization.

385578684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919 (or 3911 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The square root of 385578684 is about 19636.1575671005. The cubic root of 385578684 is about 727.8429374771.

The spelling of 385578684 in words is "three hundred eighty-five million, five hundred seventy-eight thousand, six hundred eighty-four".