1680763776 has 64 divisors (see below), whose sum is σ = 4585230480. Its totient is φ = 545107968.

The previous prime is 1680763771. The next prime is 1680763783. The reversal of 1680763776 is 6773670861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680763771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44941 + ... + 73356.

Almost surely, 2^1680763776 is an apocalyptic number.

1680763776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1680763776 is an abundant number, since it is smaller than the sum of its proper divisors (2904466704).

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

1680763776 is a wasteful number, since it uses less digits than its factorization.

1680763776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118351 (or 118339 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 51.

The square root of 1680763776 is about 40997.1191182990. The cubic root of 1680763776 is about 1188.9645150419.

The spelling of 1680763776 in words is "one billion, six hundred eighty million, seven hundred sixty-three thousand, seven hundred seventy-six".