1667000020 has 48 divisors (see below), whose sum is σ = 4010444928. Its totient is φ = 570165120.

The previous prime is 1666999951. The next prime is 1667000033. The reversal of 1667000020 is 200007661.

It is a junction number, because it is equal to n+sod(n) for n = 1666999955 and 1667000000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44799 + ... + 73081.

It is an arithmetic number, because the mean of its divisors is an integer number (83550936).

Almost surely, 2^1667000020 is an apocalyptic number.

1667000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1667000020 is an abundant number, since it is smaller than the sum of its proper divisors (2343444908).

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

1667000020 is a wasteful number, since it uses less digits than its factorization.

1667000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28720 (or 28718 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1667000020 is about 40828.9115701117. The cubic root of 1667000020 is about 1185.7101430431.

Adding to 1667000020 its reverse (200007661), we get a palindrome (1867007681).

The spelling of 1667000020 in words is "one billion, six hundred sixty-seven million, twenty", and thus it is an aban number.