227677921 has 9 divisors (see below), whose sum is σ = 231810033. Its totient is φ = 223618980.

The previous prime is 227677907. The next prime is 227677939. The reversal of 227677921 is 129776722.

The square root of 227677921 is 15089.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 227677921 - 2¹⁵ = 227645153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227677321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1191936 + ... + 1192126.

Almost surely, 2^227677921 is an apocalyptic number.

227677921 is the 15089-th square number.

227677921 is the 7545-th centered octagonal number.

It is an amenable number.

227677921 is a deficient number, since it is larger than the sum of its proper divisors (4132112).

227677921 is an frugal number, since it uses more digits than its factorization.

227677921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 270 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The cubic root of 227677921 is about 610.6236754818.

The spelling of 227677921 in words is "two hundred twenty-seven million, six hundred seventy-seven thousand, nine hundred twenty-one".