999982506 has 64 divisors (see below), whose sum is σ = 2073673728. Its totient is φ = 321366528.

The previous prime is 999982499. The next prime is 999982513. The reversal of 999982506 is 605289999.

It is an interprime number because it is at equal distance from previous prime (999982499) and next prime (999982513).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6134781 + ... + 6134943.

It is an arithmetic number, because the mean of its divisors is an integer number (32401152).

Almost surely, 2^999982506 is an apocalyptic number.

It is a pronic number, being equal to 31622×31623.

999982506 is an abundant number, since it is smaller than the sum of its proper divisors (1073691222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999982506 is a wasteful number, since it uses less digits than its factorization.

999982506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 3149280, while the sum is 57.

The square root of 999982506 is about 31622.4999960471. The cubic root of 999982506 is about 999.9941686327.

The spelling of 999982506 in words is "nine hundred ninety-nine million, nine hundred eighty-two thousand, five hundred six".