216069747 has 8 divisors (see below), whose sum is σ = 292816080. Its totient is φ = 141684960.

The previous prime is 216069727. The next prime is 216069757. The reversal of 216069747 is 747960612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216069747 - 2⁶ = 216069683 is a prime.

It is a super-2 number, since 2×216069747² = 93372271137288018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216069699 and 216069708.

It is not an unprimeable number, because it can be changed into a prime (216069727) 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, 590172 + ... + 590537.

It is an arithmetic number, because the mean of its divisors is an integer number (36602010).

Almost surely, 2^216069747 is an apocalyptic number.

216069747 is a deficient number, since it is larger than the sum of its proper divisors (76746333).

216069747 is a wasteful number, since it uses less digits than its factorization.

216069747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180773.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 216069747 is about 14699.3111063070. The cubic root of 216069747 is about 600.0645736057.

The spelling of 216069747 in words is "two hundred sixteen million, sixty-nine thousand, seven hundred forty-seven".