211460664 has 16 divisors (see below), whose sum is σ = 528651720. Its totient is φ = 70486880.

The previous prime is 211460621. The next prime is 211460681. The reversal of 211460664 is 466064112.

It is a super-2 number, since 2×211460664² = 89431224838641792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4405407 + ... + 4405454.

Almost surely, 2^211460664 is an apocalyptic number.

211460664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211460664 is an abundant number, since it is smaller than the sum of its proper divisors (317191056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211460664 is a wasteful number, since it uses less digits than its factorization.

211460664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810870 (or 8810866 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 211460664 is about 14541.6871098233. The cubic root of 211460664 is about 595.7671192018.

The spelling of 211460664 in words is "two hundred eleven million, four hundred sixty thousand, six hundred sixty-four".