999603250693 has 2 divisors, whose sum is σ = 999603250694. Its totient is φ = 999603250692.

The previous prime is 999603250673. The next prime is 999603250703. The reversal of 999603250693 is 396052306999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622383721569 + 377219529124 = 788913^2 + 614182^2 .

It is a cyclic number.

It is not a de Polignac number, because 999603250693 - 2²⁹ = 999066379781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999603250673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499801625346 + 499801625347.

It is an arithmetic number, because the mean of its divisors is an integer number (499801625347).

Almost surely, 2^999603250693 is an apocalyptic number.

It is an amenable number.

999603250693 is a deficient number, since it is larger than the sum of its proper divisors (1).

999603250693 is an equidigital number, since it uses as much as digits as its factorization.

999603250693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21257640, while the sum is 61.

The spelling of 999603250693 in words is "nine hundred ninety-nine billion, six hundred three million, two hundred fifty thousand, six hundred ninety-three".