655567499 has 4 divisors (see below), whose sum is σ = 661932336. Its totient is φ = 649202664.

The previous prime is 655567453. The next prime is 655567531. The reversal of 655567499 is 994765556.

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 655567499 - 2²⁰ = 654518923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655567439) 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, 3182264 + ... + 3182469.

It is an arithmetic number, because the mean of its divisors is an integer number (165483084).

Almost surely, 2^655567499 is an apocalyptic number.

655567499 is a deficient number, since it is larger than the sum of its proper divisors (6364837).

655567499 is a wasteful number, since it uses less digits than its factorization.

655567499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364836.

The product of its digits is 10206000, while the sum is 56.

The square root of 655567499 is about 25604.0523941036. The cubic root of 655567499 is about 868.7053006417.

The spelling of 655567499 in words is "six hundred fifty-five million, five hundred sixty-seven thousand, four hundred ninety-nine".