1006564999 has 12 divisors (see below), whose sum is σ = 1112032152. Its totient is φ = 910392560.

The previous prime is 1006564967. The next prime is 1006565011. The reversal of 1006564999 is 9994656001.

It is not a de Polignac number, because 1006564999 - 2⁵ = 1006564967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006564399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2724 + ... + 44950.

It is an arithmetic number, because the mean of its divisors is an integer number (92669346).

Almost surely, 2^1006564999 is an apocalyptic number.

1006564999 is a deficient number, since it is larger than the sum of its proper divisors (105467153).

1006564999 is a wasteful number, since it uses less digits than its factorization.

1006564999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42446 (or 42435 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 1006564999 is about 31726.4085424115. The cubic root of 1006564999 is about 1002.1835615884.

The spelling of 1006564999 in words is "one billion, six million, five hundred sixty-four thousand, nine hundred ninety-nine".