499685697 has 12 divisors (see below), whose sum is σ = 824878080. Its totient is φ = 285534648.

The previous prime is 499685677. The next prime is 499685701. The reversal of 499685697 is 796586994.

It is a happy number.

499685697 is a `hidden beast` number, since 4 + 9 + 9 + 68 + 569 + 7 = 666.

It is not a de Polignac number, because 499685697 - 2⁷ = 499685569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 7931519 = 499685697 / (4 + 9 + 9 + 6 + 8 + 5 + 6 + 9 + 7).

It is not an unprimeable number, because it can be changed into a prime (499685677) 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 11 ways as a sum of consecutive naturals, for example, 3965697 + ... + 3965822.

It is an arithmetic number, because the mean of its divisors is an integer number (68739840).

Almost surely, 2^499685697 is an apocalyptic number.

It is an amenable number.

499685697 is a deficient number, since it is larger than the sum of its proper divisors (325192383).

499685697 is a wasteful number, since it uses less digits than its factorization.

499685697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931532 (or 7931529 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The square root of 499685697 is about 22353.6506414500. The cubic root of 499685697 is about 793.5341828202.

The spelling of 499685697 in words is "four hundred ninety-nine million, six hundred eighty-five thousand, six hundred ninety-seven".