102992605 has 4 divisors (see below), whose sum is σ = 123591132. Its totient is φ = 82394080.

The previous prime is 102992599. The next prime is 102992623. The reversal of 102992605 is 506299201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506299201 = 41 ⋅12348761.

It can be written as a sum of positive squares in 2 ways, for example, as 62504836 + 40487769 = 7906^2 + 6363^2 .

It is not a de Polignac number, because 102992605 - 2⁹ = 102992093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10299256 + ... + 10299265.

It is an arithmetic number, because the mean of its divisors is an integer number (30897783).

Almost surely, 2^102992605 is an apocalyptic number.

It is an amenable number.

102992605 is a deficient number, since it is larger than the sum of its proper divisors (20598527).

102992605 is an equidigital number, since it uses as much as digits as its factorization.

102992605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20598526.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 102992605 is about 10148.5272330521. The cubic root of 102992605 is about 468.7435962384.

The spelling of 102992605 in words is "one hundred two million, nine hundred ninety-two thousand, six hundred five".