102317661 has 10 divisors (see below), whose sum is σ = 152845022. Its totient is φ = 68211720.

The previous prime is 102317629. The next prime is 102317687. The reversal of 102317661 is 166713201.

It can be written as a sum of positive squares in only one way, i.e., 96412761 + 5904900 = 9819^2 + 2430^2 .

It is not a de Polignac number, because 102317661 - 2⁵ = 102317629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102317161) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 631510 + ... + 631671.

Almost surely, 2^102317661 is an apocalyptic number.

It is an amenable number.

102317661 is a deficient number, since it is larger than the sum of its proper divisors (50527361).

102317661 is an equidigital number, since it uses as much as digits as its factorization.

102317661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263193 (or 1263184 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 102317661 is about 10115.2192759228. The cubic root of 102317661 is about 467.7174082929.

The spelling of 102317661 in words is "one hundred two million, three hundred seventeen thousand, six hundred sixty-one".