1687020484 has 12 divisors (see below), whose sum is σ = 2987856144. Its totient is φ = 833347304.

The previous prime is 1687020479. The next prime is 1687020487. The reversal of 1687020484 is 4840207861.

It is a super-2 number, since 2×1687020484² = 5692076226871188512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1687020487) 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, 2540362 + ... + 2541025.

It is an arithmetic number, because the mean of its divisors is an integer number (248988012).

Almost surely, 2^1687020484 is an apocalyptic number.

It is an amenable number.

1687020484 is a deficient number, since it is larger than the sum of its proper divisors (1300835660).

1687020484 is a wasteful number, since it uses less digits than its factorization.

1687020484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081474 (or 5081472 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 1687020484 is about 41073.3549153219. The cubic root of 1687020484 is about 1190.4380102631.

The spelling of 1687020484 in words is "one billion, six hundred eighty-seven million, twenty thousand, four hundred eighty-four".