102662409 has 16 divisors (see below), whose sum is σ = 143078400. Its totient is φ = 65354256.

The previous prime is 102662393. The next prime is 102662411. The reversal of 102662409 is 904266201.

It is not a de Polignac number, because 102662409 - 2⁴ = 102662393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102662449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62602 + ... + 64220.

It is an arithmetic number, because the mean of its divisors is an integer number (8942400).

Almost surely, 2^102662409 is an apocalyptic number.

It is an amenable number.

102662409 is a deficient number, since it is larger than the sum of its proper divisors (40415991).

102662409 is a wasteful number, since it uses less digits than its factorization.

102662409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 102662409 is about 10132.2459997771. The cubic root of 102662409 is about 468.2421267012.

The spelling of 102662409 in words is "one hundred two million, six hundred sixty-two thousand, four hundred nine".