228950661 has 4 divisors (see below), whose sum is σ = 305267552. Its totient is φ = 152633772.

The previous prime is 228950641. The next prime is 228950669. The reversal of 228950661 is 166059822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 228950661 - 2⁶ = 228950597 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 (228950669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38158441 + ... + 38158446.

It is an arithmetic number, because the mean of its divisors is an integer number (76316888).

Almost surely, 2^228950661 is an apocalyptic number.

It is an amenable number.

228950661 is a deficient number, since it is larger than the sum of its proper divisors (76316891).

228950661 is an equidigital number, since it uses as much as digits as its factorization.

228950661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76316890.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 228950661 is about 15131.1156561570. The cubic root of 228950661 is about 611.7593755868.

The spelling of 228950661 in words is "two hundred twenty-eight million, nine hundred fifty thousand, six hundred sixty-one".