499968765 has 12 divisors (see below), whose sum is σ = 866612604. Its totient is φ = 266649984.

The previous prime is 499968761. The next prime is 499968809. The reversal of 499968765 is 567869994.

It is a happy number.

499968765 is a `hidden beast` number, since 499 + 9 + 6 + 87 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 111957561 + 388011204 = 10581^2 + 19698^2 .

It is not a de Polignac number, because 499968765 - 2² = 499968761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499968761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5555164 + ... + 5555253.

It is an arithmetic number, because the mean of its divisors is an integer number (72217717).

Almost surely, 2^499968765 is an apocalyptic number.

499968765 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

499968765 is a deficient number, since it is larger than the sum of its proper divisors (366643839).

499968765 is a wasteful number, since it uses less digits than its factorization.

499968765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110428 (or 11110425 counting only the distinct ones).

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

The square root of 499968765 is about 22359.9813282570. The cubic root of 499968765 is about 793.6839981493.

The spelling of 499968765 in words is "four hundred ninety-nine million, nine hundred sixty-eight thousand, seven hundred sixty-five".