205474387 has 8 divisors (see below), whose sum is σ = 215953920. Its totient is φ = 195123720.

The previous prime is 205474369. The next prime is 205474429. The reversal of 205474387 is 783474502.

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

It is a de Polignac number, because none of the positive numbers 2^k-205474387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205474337) 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, 28939 + ... + 35332.

It is an arithmetic number, because the mean of its divisors is an integer number (26994240).

Almost surely, 2^205474387 is an apocalyptic number.

205474387 is a deficient number, since it is larger than the sum of its proper divisors (10479533).

205474387 is a wasteful number, since it uses less digits than its factorization.

205474387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64433.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 205474387 is about 14334.3778030300. The cubic root of 205474387 is about 590.0913264737.

The spelling of 205474387 in words is "two hundred five million, four hundred seventy-four thousand, three hundred eighty-seven".