1688727496 has 16 divisors (see below), whose sum is σ = 3213624240. Its totient is φ = 831761040.

The previous prime is 1688727473. The next prime is 1688727527. The reversal of 1688727496 is 6947278861.

It is a self number, because there is not a number n which added to its sum of digits gives 1688727496.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574770 + ... + 1575841.

It is an arithmetic number, because the mean of its divisors is an integer number (200851515).

Almost surely, 2^1688727496 is an apocalyptic number.

It is an amenable number.

1688727496 is a deficient number, since it is larger than the sum of its proper divisors (1524896744).

1688727496 is a wasteful number, since it uses less digits than its factorization.

1688727496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150684 (or 3150680 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 58.

The square root of 1688727496 is about 41094.1297024283. The cubic root of 1688727496 is about 1190.8393898911.

The spelling of 1688727496 in words is "one billion, six hundred eighty-eight million, seven hundred twenty-seven thousand, four hundred ninety-six".