1700220020 has 12 divisors (see below), whose sum is σ = 3570462084. Its totient is φ = 680088000.

The previous prime is 1700220013. The next prime is 1700220023. The reversal of 1700220020 is 200220071.

It can be written as a sum of positive squares in 2 ways, for example, as 1352621284 + 347598736 = 36778^2 + 18644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1700219977 and 1700220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1700220023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42505481 + ... + 42505520.

It is an arithmetic number, because the mean of its divisors is an integer number (297538507).

Almost surely, 2^1700220020 is an apocalyptic number.

1700220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1700220020 is an abundant number, since it is smaller than the sum of its proper divisors (1870242064).

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

1700220020 is a wasteful number, since it uses less digits than its factorization.

1700220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85011010 (or 85011008 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 1700220020 is about 41233.7243042634. The cubic root of 1700220020 is about 1193.5346779752.

Adding to 1700220020 its reverse (200220071), we get a palindrome (1900440091).

The spelling of 1700220020 in words is "one billion, seven hundred million, two hundred twenty thousand, twenty".