685758958970 has 16 divisors (see below), whose sum is σ = 1234420715520. Its totient is φ = 274291452624.

The previous prime is 685758958949. The next prime is 685758958987. The reversal of 685758958970 is 79859857586.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 685758958891 and 685758958900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277150 + ... + 1732809.

It is an arithmetic number, because the mean of its divisors is an integer number (77151294720).

Almost surely, 2^685758958970 is an apocalyptic number.

685758958970 is a deficient number, since it is larger than the sum of its proper divisors (548661756550).

685758958970 is a wasteful number, since it uses less digits than its factorization.

685758958970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032749.

The product of its (nonzero) digits is 1524096000, while the sum is 77.

The spelling of 685758958970 in words is "six hundred eighty-five billion, seven hundred fifty-eight million, nine hundred fifty-eight thousand, nine hundred seventy".