1006605644 has 12 divisors (see below), whose sum is σ = 1921701768. Its totient is φ = 457548000.

The previous prime is 1006605641. The next prime is 1006605653. The reversal of 1006605644 is 4465066001.

It is a self number, because there is not a number n which added to its sum of digits gives 1006605644.

It is not an unprimeable number, because it can be changed into a prime (1006605641) 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, 11438657 + ... + 11438744.

It is an arithmetic number, because the mean of its divisors is an integer number (160141814).

Almost surely, 2^1006605644 is an apocalyptic number.

It is an amenable number.

1006605644 is a deficient number, since it is larger than the sum of its proper divisors (915096124).

1006605644 is a wasteful number, since it uses less digits than its factorization.

1006605644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22877416 (or 22877414 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1006605644 is about 31727.0490906419. The cubic root of 1006605644 is about 1002.1970507662.

The spelling of 1006605644 in words is "one billion, six million, six hundred five thousand, six hundred forty-four".