216734764 has 24 divisors (see below), whose sum is σ = 392163968. Its totient is φ = 104699520.

The previous prime is 216734761. The next prime is 216734779. The reversal of 216734764 is 467437612.

216734764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216734764² = 93947915852271392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216734761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107752 + ... + 109744.

Almost surely, 2^216734764 is an apocalyptic number.

It is an amenable number.

216734764 is a deficient number, since it is larger than the sum of its proper divisors (175429204).

216734764 is a wasteful number, since it uses less digits than its factorization.

216734764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905 (or 2903 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 216734764 is about 14721.9144135537. The cubic root of 216734764 is about 600.6795670608.

The spelling of 216734764 in words is "two hundred sixteen million, seven hundred thirty-four thousand, seven hundred sixty-four".