999636074 has 64 divisors (see below), whose sum is σ = 1713208320. Its totient is φ = 434903040.

The previous prime is 999636073. The next prime is 999636107. The reversal of 999636074 is 470636999.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (999636073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3688559 + ... + 3688829.

It is an arithmetic number, because the mean of its divisors is an integer number (26768880).

Almost surely, 2^999636074 is an apocalyptic number.

999636074 is a deficient number, since it is larger than the sum of its proper divisors (713572246).

999636074 is a wasteful number, since it uses less digits than its factorization.

With its successor (999636075) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (455).

999636074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 2204496, while the sum is 53.

The square root of 999636074 is about 31617.0219027662. The cubic root of 999636074 is about 999.8786766146.

The spelling of 999636074 in words is "nine hundred ninety-nine million, six hundred thirty-six thousand, seventy-four".