1006523665 has 16 divisors (see below), whose sum is σ = 1381053312. Its totient is φ = 689848704.

The previous prime is 1006523627. The next prime is 1006523671. The reversal of 1006523665 is 5663256001.

It is a cyclic number.

It is not a de Polignac number, because 1006523665 - 2¹¹ = 1006521617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1006523665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80517 + ... + 92173.

It is an arithmetic number, because the mean of its divisors is an integer number (86315832).

Almost surely, 2^1006523665 is an apocalyptic number.

It is an amenable number.

1006523665 is a deficient number, since it is larger than the sum of its proper divisors (374529647).

1006523665 is a wasteful number, since it uses less digits than its factorization.

1006523665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14136.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 1006523665 is about 31725.7571225653. The cubic root of 1006523665 is about 1002.1698433744.

Adding to 1006523665 its reverse (5663256001), we get a palindrome (6669779666).

The spelling of 1006523665 in words is "one billion, six million, five hundred twenty-three thousand, six hundred sixty-five".