1320634670 has 32 divisors (see below), whose sum is σ = 2430822528. Its totient is φ = 516354048.

The previous prime is 1320634669. The next prime is 1320634687. The reversal of 1320634670 is 764360231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540692 + ... + 543128.

It is an arithmetic number, because the mean of its divisors is an integer number (75963204).

Almost surely, 2^1320634670 is an apocalyptic number.

1320634670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320634670 is a deficient number, since it is larger than the sum of its proper divisors (1110187858).

1320634670 is a wasteful number, since it uses less digits than its factorization.

1320634670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 1320634670 is about 36340.5375579393. The cubic root of 1320634670 is about 1097.1370925277.

The spelling of 1320634670 in words is "one billion, three hundred twenty million, six hundred thirty-four thousand, six hundred seventy".