1420686680 has 64 divisors (see below), whose sum is σ = 3665874240. Its totient is φ = 485402112.

The previous prime is 1420686667. The next prime is 1420686689. The reversal of 1420686680 is 866860241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420686689) 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 15 ways as a sum of consecutive naturals, for example, 73382 + ... + 90698.

It is an arithmetic number, because the mean of its divisors is an integer number (57279285).

Almost surely, 2^1420686680 is an apocalyptic number.

1420686680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420686680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1832937120).

1420686680 is an abundant number, since it is smaller than the sum of its proper divisors (2245187560).

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

1420686680 is a wasteful number, since it uses less digits than its factorization.

1420686680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17628 (or 17624 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 1420686680 is about 37691.9975591637. The cubic root of 1420686680 is about 1124.1720143016.

The spelling of 1420686680 in words is "one billion, four hundred twenty million, six hundred eighty-six thousand, six hundred eighty".