97916217 has 16 divisors (see below), whose sum is σ = 149354880. Its totient is φ = 55896192.

The previous prime is 97916213. The next prime is 97916237. The reversal of 97916217 is 71261979.

It is a happy number.

It is not a de Polignac number, because 97916217 - 2² = 97916213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97916213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28909 + ... + 32117.

It is an arithmetic number, because the mean of its divisors is an integer number (9334680).

Almost surely, 2^97916217 is an apocalyptic number.

It is an amenable number.

97916217 is a deficient number, since it is larger than the sum of its proper divisors (51438663).

97916217 is a wasteful number, since it uses less digits than its factorization.

97916217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672.

The product of its digits is 47628, while the sum is 42.

The square root of 97916217 is about 9895.2623512467. The cubic root of 97916217 is about 460.9122052889.

The spelling of 97916217 in words is "ninety-seven million, nine hundred sixteen thousand, two hundred seventeen".