216914877 has 12 divisors (see below), whose sum is σ = 313619904. Its totient is φ = 144472200.

The previous prime is 216914861. The next prime is 216914879. The reversal of 216914877 is 778419612.

It is a happy number.

216914877 is a `hidden beast` number, since 2 + 169 + 1 + 487 + 7 = 666.

It is not a de Polignac number, because 216914877 - 2⁴ = 216914861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216914879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 999 + ... + 20852.

It is an arithmetic number, because the mean of its divisors is an integer number (26134992).

Almost surely, 2^216914877 is an apocalyptic number.

It is an amenable number.

216914877 is a deficient number, since it is larger than the sum of its proper divisors (96705027).

216914877 is a wasteful number, since it uses less digits than its factorization.

216914877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22960 (or 22957 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 216914877 is about 14728.0303163729. The cubic root of 216914877 is about 600.8459151521.

The spelling of 216914877 in words is "two hundred sixteen million, nine hundred fourteen thousand, eight hundred seventy-seven".