212410664 has 8 divisors (see below), whose sum is σ = 398270010. Its totient is φ = 106205328.

The previous prime is 212410663. The next prime is 212410717. The reversal of 212410664 is 466014212.

It can be written as a sum of positive squares in only one way, i.e., 211469764 + 940900 = 14542^2 + 970^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212410663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13275659 + ... + 13275674.

Almost surely, 2^212410664 is an apocalyptic number.

It is an amenable number.

212410664 is a deficient number, since it is larger than the sum of its proper divisors (185859346).

212410664 is a wasteful number, since it uses less digits than its factorization.

212410664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26551339 (or 26551335 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 212410664 is about 14574.3152154741. The cubic root of 212410664 is about 596.6579599172.

Adding to 212410664 its reverse (466014212), we get a palindrome (678424876).

The spelling of 212410664 in words is "two hundred twelve million, four hundred ten thousand, six hundred sixty-four".