685851941 has 8 divisors (see below), whose sum is σ = 694693824. Its totient is φ = 677064960.

The previous prime is 685851937. The next prime is 685851979. The reversal of 685851941 is 149158586.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 685851941 - 2² = 685851937 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 (685854941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11720 + ... + 38846.

It is an arithmetic number, because the mean of its divisors is an integer number (86836728).

Almost surely, 2^685851941 is an apocalyptic number.

It is an amenable number.

685851941 is a deficient number, since it is larger than the sum of its proper divisors (8841883).

685851941 is a wasteful number, since it uses less digits than its factorization.

685851941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27451.

The product of its digits is 345600, while the sum is 47.

The square root of 685851941 is about 26188.7750954488. The cubic root of 685851941 is about 881.8812804799.

The spelling of 685851941 in words is "six hundred eighty-five million, eight hundred fifty-one thousand, nine hundred forty-one".