228763685 has 8 divisors (see below), whose sum is σ = 274726296. Its totient is φ = 182871040.

The previous prime is 228763673. The next prime is 228763693. The reversal of 228763685 is 586367822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1085764 + 227677921 = 1042^2 + 15089^2 .

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

It is not a de Polignac number, because 228763685 - 2⁴ = 228763669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10004 + ... + 23613.

It is an arithmetic number, because the mean of its divisors is an integer number (34340787).

Almost surely, 2^228763685 is an apocalyptic number.

It is an amenable number.

228763685 is a deficient number, since it is larger than the sum of its proper divisors (45962611).

228763685 is a wasteful number, since it uses less digits than its factorization.

228763685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34983.

The product of its digits is 967680, while the sum is 47.

The square root of 228763685 is about 15124.9358676326. The cubic root of 228763685 is about 611.5927960677.

It can be divided in two parts, 2287636 and 85, that multiplied together give a triangular number (194449060 = T₁₉₇₂₀).

The spelling of 228763685 in words is "two hundred twenty-eight million, seven hundred sixty-three thousand, six hundred eighty-five".