605467409 has 4 divisors (see below), whose sum is σ = 614504304. Its totient is φ = 596430516.

The previous prime is 605467399. The next prime is 605467451. The reversal of 605467409 is 904764506.

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, and also an emirpimes, since its reverse is a distinct semiprime: 904764506 = 2 ⋅452382253.

It is a de Polignac number, because none of the positive numbers 2^k-605467409 is a prime.

It is a super-2 number, since 2×605467409² = 733181566722346562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (605467469) 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, 4518347 + ... + 4518480.

It is an arithmetic number, because the mean of its divisors is an integer number (153626076).

Almost surely, 2^605467409 is an apocalyptic number.

It is an amenable number.

605467409 is a deficient number, since it is larger than the sum of its proper divisors (9036895).

605467409 is an equidigital number, since it uses as much as digits as its factorization.

605467409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9036894.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 605467409 is about 24606.2473571246. The cubic root of 605467409 is about 845.9868069450.

The spelling of 605467409 in words is "six hundred five million, four hundred sixty-seven thousand, four hundred nine".