499975657 has 8 divisors (see below), whose sum is σ = 516360960. Its totient is φ = 483606480.

The previous prime is 499975579. The next prime is 499975667. The reversal of 499975657 is 756579994.

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 499975657 - 2²³ = 491587049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499975595 and 499975604.

It is not an unprimeable number, because it can be changed into a prime (499975667) 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, 122394 + ... + 126412.

It is an arithmetic number, because the mean of its divisors is an integer number (64545120).

Almost surely, 2^499975657 is an apocalyptic number.

It is an amenable number.

499975657 is a deficient number, since it is larger than the sum of its proper divisors (16385303).

499975657 is a wasteful number, since it uses less digits than its factorization.

499975657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8063.

The product of its digits is 21432600, while the sum is 61.

The square root of 499975657 is about 22360.1354423447. The cubic root of 499975657 is about 793.6876450738.

It can be divided in two parts, 4999 and 75657, that added together give a square (80656 = 284²).

The spelling of 499975657 in words is "four hundred ninety-nine million, nine hundred seventy-five thousand, six hundred fifty-seven".