102216657 has 8 divisors (see below), whose sum is σ = 136564000. Its totient is φ = 68006880.

The previous prime is 102216643. The next prime is 102216661. The reversal of 102216657 is 756612201.

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

It is a de Polignac number, because none of the positive numbers 2^k-102216657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102216617) 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, 32644 + ... + 35637.

It is an arithmetic number, because the mean of its divisors is an integer number (17070500).

Almost surely, 2^102216657 is an apocalyptic number.

It is an amenable number.

102216657 is a deficient number, since it is larger than the sum of its proper divisors (34347343).

102216657 is an equidigital number, since it uses as much as digits as its factorization.

102216657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68783.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 102216657 is about 10110.2253684080. The cubic root of 102216657 is about 467.5634535012.

Adding to 102216657 its reverse (756612201), we get a palindrome (858828858).

The spelling of 102216657 in words is "one hundred two million, two hundred sixteen thousand, six hundred fifty-seven".