655516499 has 8 divisors (see below), whose sum is σ = 715848192. Its totient is φ = 595308040.

The previous prime is 655516489. The next prime is 655516513. The reversal of 655516499 is 994615556.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655516499 - 2²⁰ = 654467923 is a prime.

It is a super-2 number, since 2×655516499² = 859403760922434002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655516439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19499 + ... + 41124.

It is an arithmetic number, because the mean of its divisors is an integer number (89481024).

Almost surely, 2^655516499 is an apocalyptic number.

655516499 is a deficient number, since it is larger than the sum of its proper divisors (60331693).

655516499 is a wasteful number, since it uses less digits than its factorization.

655516499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61617.

The product of its digits is 1458000, while the sum is 50.

The square root of 655516499 is about 25603.0564386364. The cubic root of 655516499 is about 868.6827730254.

The spelling of 655516499 in words is "six hundred fifty-five million, five hundred sixteen thousand, four hundred ninety-nine".