680992563 has 4 divisors (see below), whose sum is σ = 907990088. Its totient is φ = 453995040.

The previous prime is 680992549. The next prime is 680992577. The reversal of 680992563 is 365299086.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (680992549) and next prime (680992577).

It is not a de Polignac number, because 680992563 - 2²¹ = 678895411 is a prime.

It is a super-2 number, since 2×680992563² = 927501741722617938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680992063) 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, 113498758 + ... + 113498763.

It is an arithmetic number, because the mean of its divisors is an integer number (226997522).

Almost surely, 2^680992563 is an apocalyptic number.

680992563 is a deficient number, since it is larger than the sum of its proper divisors (226997525).

680992563 is a wasteful number, since it uses less digits than its factorization.

680992563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226997524.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 680992563 is about 26095.8342077811. The cubic root of 680992563 is about 879.7935823532.

The spelling of 680992563 in words is "six hundred eighty million, nine hundred ninety-two thousand, five hundred sixty-three".