1687413970 has 24 divisors (see below), whose sum is σ = 3338571852. Its totient is φ = 613604640.

The previous prime is 1687413967. The next prime is 1687413989. The reversal of 1687413970 is 793147861.

It can be written as a sum of positive squares in 2 ways, for example, as 1668150649 + 19263321 = 40843^2 + 4389^2 .

It is a super-3 number, since 3×1687413970³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1687413970.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 696069 + ... + 698488.

Almost surely, 2^1687413970 is an apocalyptic number.

1687413970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1687413970 is a deficient number, since it is larger than the sum of its proper divisors (1651157882).

1687413970 is a wasteful number, since it uses less digits than its factorization.

1687413970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394586 (or 1394575 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1687413970 is about 41078.1446757275. The cubic root of 1687413970 is about 1190.5305569120.

The spelling of 1687413970 in words is "one billion, six hundred eighty-seven million, four hundred thirteen thousand, nine hundred seventy".