217069089 has 8 divisors (see below), whose sum is σ = 299405760. Its totient is φ = 139722576.

The previous prime is 217069057. The next prime is 217069093. The reversal of 217069089 is 980960712.

217069089 = 1906² + 1907² + ... + 1963².

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

It is not a de Polignac number, because 217069089 - 2⁵ = 217069057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 217069089.

It is not an unprimeable number, because it can be changed into a prime (217069019) 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, 1247437 + ... + 1247610.

It is an arithmetic number, because the mean of its divisors is an integer number (37425720).

Almost surely, 2^217069089 is an apocalyptic number.

217069089 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

217069089 is a deficient number, since it is larger than the sum of its proper divisors (82336671).

217069089 is a wasteful number, since it uses less digits than its factorization.

217069089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495079.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 217069089 is about 14733.2647094933. The cubic root of 217069089 is about 600.9882685373.

The spelling of 217069089 in words is "two hundred seventeen million, sixty-nine thousand, eighty-nine".