228136697 has 2 divisors, whose sum is σ = 228136698. Its totient is φ = 228136696.

The previous prime is 228136693. The next prime is 228136739. The reversal of 228136697 is 796631822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203376121 + 24760576 = 14261^2 + 4976^2 .

It is a cyclic number.

It is not a de Polignac number, because 228136697 - 2² = 228136693 is a prime.

It is not a weakly prime, because it can be changed into another prime (228136691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114068348 + 114068349.

It is an arithmetic number, because the mean of its divisors is an integer number (114068349).

Almost surely, 2^228136697 is an apocalyptic number.

It is an amenable number.

228136697 is a deficient number, since it is larger than the sum of its proper divisors (1).

228136697 is an equidigital number, since it uses as much as digits as its factorization.

228136697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 228136697 is about 15104.1946822729. The cubic root of 228136697 is about 611.0335403383.

The spelling of 228136697 in words is "two hundred twenty-eight million, one hundred thirty-six thousand, six hundred ninety-seven".