999670037 has 2 divisors, whose sum is σ = 999670038. Its totient is φ = 999670036.

The previous prime is 999670031. The next prime is 999670073. The reversal of 999670037 is 730076999.

It is a happy number.

999670037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (999670073) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917241796 + 82428241 = 30286^2 + 9079^2 .

It is a cyclic number.

It is not a de Polignac number, because 999670037 - 2¹² = 999665941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999670031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499835018 + 499835019.

It is an arithmetic number, because the mean of its divisors is an integer number (499835019).

Almost surely, 2^999670037 is an apocalyptic number.

It is an amenable number.

999670037 is a deficient number, since it is larger than the sum of its proper divisors (1).

999670037 is an equidigital number, since it uses as much as digits as its factorization.

999670037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 999670037 is about 31617.5589981263. The cubic root of 999670037 is about 999.8900002338.

The spelling of 999670037 in words is "nine hundred ninety-nine million, six hundred seventy thousand, thirty-seven".