207216164 has 6 divisors (see below), whose sum is σ = 362628294. Its totient is φ = 103608080.

The previous prime is 207216161. The next prime is 207216197. The reversal of 207216164 is 461612702.

207216164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 194825764 + 12390400 = 13958^2 + 3520^2 .

It is not an unprimeable number, because it can be changed into a prime (207216161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25902017 + ... + 25902024.

It is an arithmetic number, because the mean of its divisors is an integer number (60438049).

Almost surely, 2^207216164 is an apocalyptic number.

It is an amenable number.

207216164 is a deficient number, since it is larger than the sum of its proper divisors (155412130).

207216164 is a wasteful number, since it uses less digits than its factorization.

207216164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51804045 (or 51804043 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 207216164 is about 14395.0048280645. The cubic root of 207216164 is about 591.7540104429.

Adding to 207216164 its reverse (461612702), we get a palindrome (668828866).

The spelling of 207216164 in words is "two hundred seven million, two hundred sixteen thousand, one hundred sixty-four".