285494677 has 4 divisors (see below), whose sum is σ = 307455820. Its totient is φ = 263533536.

The previous prime is 285494659. The next prime is 285494681. The reversal of 285494677 is 776494582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67223601 + 218271076 = 8199^2 + 14774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285494677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285494777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10980552 + ... + 10980577.

It is an arithmetic number, because the mean of its divisors is an integer number (76863955).

Almost surely, 2^285494677 is an apocalyptic number.

It is an amenable number.

285494677 is a deficient number, since it is larger than the sum of its proper divisors (21961143).

285494677 is a wasteful number, since it uses less digits than its factorization.

285494677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21961142.

The product of its digits is 3386880, while the sum is 52.

The square root of 285494677 is about 16896.5877324388. The cubic root of 285494677 is about 658.4649640904.

The spelling of 285494677 in words is "two hundred eighty-five million, four hundred ninety-four thousand, six hundred seventy-seven".