102036661 has 2 divisors, whose sum is σ = 102036662. Its totient is φ = 102036660.

The previous prime is 102036647. The next prime is 102036673. The reversal of 102036661 is 166630201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 10929636 = 9545^2 + 3306^2 .

It is a cyclic number.

It is not a de Polignac number, because 102036661 - 2⁵ = 102036629 is a prime.

It is a super-2 number, since 2×102036661² = 20822960376057842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102036461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51018330 + 51018331.

It is an arithmetic number, because the mean of its divisors is an integer number (51018331).

Almost surely, 2^102036661 is an apocalyptic number.

It is an amenable number.

102036661 is a deficient number, since it is larger than the sum of its proper divisors (1).

102036661 is an equidigital number, since it uses as much as digits as its factorization.

102036661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 102036661 is about 10101.3197652584. The cubic root of 102036661 is about 467.2888439877.

Adding to 102036661 its reverse (166630201), we get a palindrome (268666862).

The spelling of 102036661 in words is "one hundred two million, thirty-six thousand, six hundred sixty-one".