1670740720 has 40 divisors (see below), whose sum is σ = 4237608240. Its totient is φ = 607541760.

The previous prime is 1670740717. The next prime is 1670740727. The reversal of 1670740720 is 270470761.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1670740720² = 5582749106932236800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670740727) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 948405 + ... + 950164.

It is an arithmetic number, because the mean of its divisors is an integer number (105940206).

Almost surely, 2^1670740720 is an apocalyptic number.

1670740720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670740720 is an abundant number, since it is smaller than the sum of its proper divisors (2566867520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1670740720 is a wasteful number, since it uses less digits than its factorization.

1670740720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898593 (or 1898587 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 1670740720 is about 40874.6953505467. The cubic root of 1670740720 is about 1186.5963802722.

The spelling of 1670740720 in words is "one billion, six hundred seventy million, seven hundred forty thousand, seven hundred twenty".