1687055532 has 12 divisors (see below), whose sum is σ = 3936462936. Its totient is φ = 562351840.

The previous prime is 1687055527. The next prime is 1687055533. The reversal of 1687055532 is 2355507861.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1687055533) 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, 70293969 + ... + 70293992.

It is an arithmetic number, because the mean of its divisors is an integer number (328038578).

Almost surely, 2^1687055532 is an apocalyptic number.

1687055532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1687055532 is an abundant number, since it is smaller than the sum of its proper divisors (2249407404).

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

1687055532 is a wasteful number, since it uses less digits than its factorization.

1687055532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140587968 (or 140587966 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 1687055532 is about 41073.7815643994. The cubic root of 1687055532 is about 1190.4462540244.

The spelling of 1687055532 in words is "one billion, six hundred eighty-seven million, fifty-five thousand, five hundred thirty-two".