213265064 has 8 divisors (see below), whose sum is σ = 399872010. Its totient is φ = 106632528.

The previous prime is 213265049. The next prime is 213265069. The reversal of 213265064 is 460562312.

It can be written as a sum of positive squares in only one way, i.e., 147816964 + 65448100 = 12158^2 + 8090^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×213265064⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (213265069) 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 as a sum of consecutive naturals, namely, 13329059 + ... + 13329074.

Almost surely, 2^213265064 is an apocalyptic number.

It is an amenable number.

213265064 is a deficient number, since it is larger than the sum of its proper divisors (186606946).

213265064 is a wasteful number, since it uses less digits than its factorization.

213265064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26658139 (or 26658135 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 213265064 is about 14603.5976389382. The cubic root of 213265064 is about 597.4568880502.

The spelling of 213265064 in words is "two hundred thirteen million, two hundred sixty-five thousand, sixty-four".