102436661 has 4 divisors (see below), whose sum is σ = 102798912. Its totient is φ = 102074412.

The previous prime is 102436639. The next prime is 102436669. The reversal of 102436661 is 166634201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102436661 - 2¹⁰ = 102435637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102436669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180701 + ... + 181266.

It is an arithmetic number, because the mean of its divisors is an integer number (25699728).

Almost surely, 2^102436661 is an apocalyptic number.

It is an amenable number.

102436661 is a deficient number, since it is larger than the sum of its proper divisors (362251).

102436661 is an equidigital number, since it uses as much as digits as its factorization.

102436661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362250.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 102436661 is about 10121.0997920187. The cubic root of 102436661 is about 467.8986634391.

The spelling of 102436661 in words is "one hundred two million, four hundred thirty-six thousand, six hundred sixty-one".