999620507 has 2 divisors, whose sum is σ = 999620508. Its totient is φ = 999620506.

The previous prime is 999620473. The next prime is 999620563. The reversal of 999620507 is 705026999.

It is a weak prime.

It is an emirp because it is prime and its reverse (705026999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999620507 - 2²² = 995426203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999620107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499810253 + 499810254.

It is an arithmetic number, because the mean of its divisors is an integer number (499810254).

Almost surely, 2^999620507 is an apocalyptic number.

999620507 is a deficient number, since it is larger than the sum of its proper divisors (1).

999620507 is an equidigital number, since it uses as much as digits as its factorization.

999620507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 999620507 is about 31616.7757211263. The cubic root of 999620507 is about 999.8734863283.

It can be divided in two parts, 9996 and 20507, that added together give a palindrome (30503).

The spelling of 999620507 in words is "nine hundred ninety-nine million, six hundred twenty thousand, five hundred seven".