263228164 has 6 divisors (see below), whose sum is σ = 460649294. Its totient is φ = 131614080.

The previous prime is 263228149. The next prime is 263228167. The reversal of 263228164 is 461822362.

It can be written as a sum of positive squares in only one way, i.e., 226261764 + 36966400 = 15042^2 + 6080^2 .

It is not an unprimeable number, because it can be changed into a prime (263228167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32903517 + ... + 32903524.

Almost surely, 2^263228164 is an apocalyptic number.

It is an amenable number.

263228164 is a deficient number, since it is larger than the sum of its proper divisors (197421130).

263228164 is a wasteful number, since it uses less digits than its factorization.

263228164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65807045 (or 65807043 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 263228164 is about 16224.3078126618. The cubic root of 263228164 is about 640.8810813896.

The spelling of 263228164 in words is "two hundred sixty-three million, two hundred twenty-eight thousand, one hundred sixty-four".