1005999964 has 12 divisors (see below), whose sum is σ = 1801442104. Its totient is φ = 491302224.

The previous prime is 1005999947. The next prime is 1005999989. The reversal of 1005999964 is 4699995001.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2924247 + ... + 2924590.

Almost surely, 2^1005999964 is an apocalyptic number.

It is an amenable number.

1005999964 is a deficient number, since it is larger than the sum of its proper divisors (795442140).

1005999964 is a wasteful number, since it uses less digits than its factorization.

1005999964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848884 (or 5848882 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 52.

The square root of 1005999964 is about 31717.5024867974. The cubic root of 1005999964 is about 1001.9960013280.

The spelling of 1005999964 in words is "one billion, five million, nine hundred ninety-nine thousand, nine hundred sixty-four".