680664741 has 8 divisors (see below), whose sum is σ = 907730880. Its totient is φ = 453687552.

The previous prime is 680664731. The next prime is 680664749. The reversal of 680664741 is 147466086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 680664741 - 2⁵ = 680664709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 680664693 and 680664702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680664749) 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, 1660 + ... + 36933.

It is an arithmetic number, because the mean of its divisors is an integer number (113466360).

Almost surely, 2^680664741 is an apocalyptic number.

It is an amenable number.

680664741 is a deficient number, since it is larger than the sum of its proper divisors (227066139).

680664741 is a wasteful number, since it uses less digits than its factorization.

680664741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44475.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 680664741 is about 26089.5523342199. The cubic root of 680664741 is about 879.6523855180.

The spelling of 680664741 in words is "six hundred eighty million, six hundred sixty-four thousand, seven hundred forty-one".