1687481003 has 8 divisors (see below), whose sum is σ = 1847079696. Its totient is φ = 1532138400.

The previous prime is 1687480987. The next prime is 1687481009. The reversal of 1687481003 is 3001847861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1687481003 - 2⁴ = 1687480987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1687481009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063193 + ... + 1064778.

It is an arithmetic number, because the mean of its divisors is an integer number (230884962).

Almost surely, 2^1687481003 is an apocalyptic number.

1687481003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1687481003 is a deficient number, since it is larger than the sum of its proper divisors (159598693).

1687481003 is a wasteful number, since it uses less digits than its factorization.

1687481003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128045.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1687481003 is about 41078.9605881162. The cubic root of 1687481003 is about 1190.5463214249.

The spelling of 1687481003 in words is "one billion, six hundred eighty-seven million, four hundred eighty-one thousand, three".