1000264665 has 32 divisors (see below), whose sum is σ = 1657843200. Its totient is φ = 514384640.

The previous prime is 1000264663. The next prime is 1000264787. The reversal of 1000264665 is 5664620001.

It is not a de Polignac number, because 1000264665 - 2¹ = 1000264663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000264663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 533680 + ... + 535550.

It is an arithmetic number, because the mean of its divisors is an integer number (51807600).

Almost surely, 2^1000264665 is an apocalyptic number.

1000264665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000264665 is a deficient number, since it is larger than the sum of its proper divisors (657578535).

1000264665 is a wasteful number, since it uses less digits than its factorization.

1000264665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1000264665 is about 31626.9610459178. The cubic root of 1000264665 is about 1000.0882138847.

Adding to 1000264665 its reverse (5664620001), we get a palindrome (6664884666).

The spelling of 1000264665 in words is "one billion, two hundred sixty-four thousand, six hundred sixty-five".