228640677 has 12 divisors (see below), whose sum is σ = 318687264. Its totient is φ = 145798840.

The previous prime is 228640673. The next prime is 228640693. The reversal of 228640677 is 776046822.

228640677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228640677 - 2² = 228640673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228640673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70449 + ... + 73622.

It is an arithmetic number, because the mean of its divisors is an integer number (26557272).

Almost surely, 2^228640677 is an apocalyptic number.

It is an amenable number.

228640677 is a deficient number, since it is larger than the sum of its proper divisors (90046587).

228640677 is a wasteful number, since it uses less digits than its factorization.

228640677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144120 (or 144097 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 228640677 is about 15120.8689234448. The cubic root of 228640677 is about 611.4831570243.

The spelling of 228640677 in words is "two hundred twenty-eight million, six hundred forty thousand, six hundred seventy-seven".