499657 has 4 divisors (see below), whose sum is σ = 510336. Its totient is φ = 488980.

The previous prime is 499649. The next prime is 499661. The reversal of 499657 is 756994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 499657 - 2³ = 499649 is a prime.

It is a Duffinian number.

499657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (499607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5269 + ... + 5362.

It is an arithmetic number, because the mean of its divisors is an integer number (127584).

2⁴⁹⁹⁶⁵⁷ is an apocalyptic number.

499657 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

499657 is a deficient number, since it is larger than the sum of its proper divisors (10679).

499657 is a wasteful number, since it uses less digits than its factorization.

499657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10678.

The product of its digits is 68040, while the sum is 40.

The square root of 499657 is about 706.8642019511. The cubic root of 499657 is about 79.3518991613.

It can be divided in two parts, 499 and 657, that added together give a square (1156 = 34²).

The spelling of 499657 in words is "four hundred ninety-nine thousand, six hundred fifty-seven".