606911491 has 4 divisors (see below), whose sum is σ = 606996400. Its totient is φ = 606826584.

The previous prime is 606911489. The next prime is 606911551. The reversal of 606911491 is 194119606.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 606911491 - 2¹ = 606911489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 606911491.

It is not an unprimeable number, because it can be changed into a prime (606911401) 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, 30636 + ... + 46393.

It is an arithmetic number, because the mean of its divisors is an integer number (151749100).

Almost surely, 2^606911491 is an apocalyptic number.

606911491 is a deficient number, since it is larger than the sum of its proper divisors (84909).

606911491 is an equidigital number, since it uses as much as digits as its factorization.

606911491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84908.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 606911491 is about 24635.5736892811. The cubic root of 606911491 is about 846.6588521161.

The spelling of 606911491 in words is "six hundred six million, nine hundred eleven thousand, four hundred ninety-one".