102622661 has 2 divisors, whose sum is σ = 102622662. Its totient is φ = 102622660.

The previous prime is 102622657. The next prime is 102622691. The reversal of 102622661 is 166226201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 42172036 = 7775^2 + 6494^2 .

It is an emirp because it is prime and its reverse (166226201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102622661 - 2² = 102622657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102622661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102622601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51311330 + 51311331.

It is an arithmetic number, because the mean of its divisors is an integer number (51311331).

Almost surely, 2^102622661 is an apocalyptic number.

It is an amenable number.

102622661 is a deficient number, since it is larger than the sum of its proper divisors (1).

102622661 is an equidigital number, since it uses as much as digits as its factorization.

102622661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 102622661 is about 10130.2843494149. The cubic root of 102622661 is about 468.1816888359.

Adding to 102622661 its reverse (166226201), we get a palindrome (268848862).

The spelling of 102622661 in words is "one hundred two million, six hundred twenty-two thousand, six hundred sixty-one".