1068644590 has 32 divisors (see below), whose sum is σ = 2075310720. Its totient is φ = 393855744.

The previous prime is 1068644587. The next prime is 1068644609. The reversal of 1068644590 is 954468601.

It is a super-2 number, since 2×1068644590² = 2284002519472536200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66747 + ... + 81193.

It is an arithmetic number, because the mean of its divisors is an integer number (64853460).

Almost surely, 2^1068644590 is an apocalyptic number.

1068644590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1068644590 is a deficient number, since it is larger than the sum of its proper divisors (1006666130).

1068644590 is a wasteful number, since it uses less digits than its factorization.

1068644590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15036.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 1068644590 is about 32690.1298559672. The cubic root of 1068644590 is about 1022.3770621140.

The spelling of 1068644590 in words is "one billion, sixty-eight million, six hundred forty-four thousand, five hundred ninety".