122663509 has 4 divisors (see below), whose sum is σ = 123348960. Its totient is φ = 121978060.

The previous prime is 122663503. The next prime is 122663539. The reversal of 122663509 is 905366221.

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 122663509 - 2³ = 122663501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122663501) 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, 342457 + ... + 342814.

It is an arithmetic number, because the mean of its divisors is an integer number (30837240).

Almost surely, 2^122663509 is an apocalyptic number.

It is an amenable number.

122663509 is a deficient number, since it is larger than the sum of its proper divisors (685451).

122663509 is an equidigital number, since it uses as much as digits as its factorization.

122663509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685450.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 122663509 is about 11075.3559310751. The cubic root of 122663509 is about 496.8650640999.

The spelling of 122663509 in words is "one hundred twenty-two million, six hundred sixty-three thousand, five hundred nine".