1006555613 has 4 divisors (see below), whose sum is σ = 1150349280. Its totient is φ = 862761948.

The previous prime is 1006555607. The next prime is 1006555631. The reversal of 1006555613 is 3165556001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1006555613 - 2⁶ = 1006555549 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 1006555613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006555013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71896823 + ... + 71896836.

It is an arithmetic number, because the mean of its divisors is an integer number (287587320).

Almost surely, 2^1006555613 is an apocalyptic number.

It is an amenable number.

1006555613 is a deficient number, since it is larger than the sum of its proper divisors (143793667).

1006555613 is an equidigital number, since it uses as much as digits as its factorization.

1006555613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143793666.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 1006555613 is about 31726.2606211321. The cubic root of 1006555613 is about 1002.1804465307.

The spelling of 1006555613 in words is "one billion, six million, five hundred fifty-five thousand, six hundred thirteen".