680993053 has 4 divisors (see below), whose sum is σ = 733377148. Its totient is φ = 628608960.

The previous prime is 680992981. The next prime is 680993057. The reversal of 680993053 is 350399086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350399086 = 2 ⋅175199543.

It can be written as a sum of positive squares in 2 ways, for example, as 183792249 + 497200804 = 13557^2 + 22298^2 .

It is a cyclic number.

It is not a de Polignac number, because 680993053 - 2¹⁷ = 680861981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680993057) 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 3 ways as a sum of consecutive naturals, for example, 26192028 + ... + 26192053.

It is an arithmetic number, because the mean of its divisors is an integer number (183344287).

Almost surely, 2^680993053 is an apocalyptic number.

It is an amenable number.

680993053 is a deficient number, since it is larger than the sum of its proper divisors (52384095).

680993053 is a wasteful number, since it uses less digits than its factorization.

680993053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52384094.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 680993053 is about 26095.8435962511. The cubic root of 680993053 is about 879.7937933681.

The spelling of 680993053 in words is "six hundred eighty million, nine hundred ninety-three thousand, fifty-three".