609911001 has 48 divisors (see below), whose sum is σ = 1077331840. Its totient is φ = 324725760.

The previous prime is 609910993. The next prime is 609911009. The reversal of 609911001 is 100119906.

It is an interprime number because it is at equal distance from previous prime (609910993) and next prime (609911009).

It is not a de Polignac number, because 609911001 - 2³ = 609910993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609911009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68841 + ... + 77193.

Almost surely, 2^609911001 is an apocalyptic number.

609911001 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

609911001 is a deficient number, since it is larger than the sum of its proper divisors (467420839).

609911001 is a wasteful number, since it uses less digits than its factorization.

609911001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8446 (or 8443 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 609911001 is about 24696.3762726437. The cubic root of 609911001 is about 848.0513612722.

The spelling of 609911001 in words is "six hundred nine million, nine hundred eleven thousand, one".