686011601 has 8 divisors (see below), whose sum is σ = 751161600. Its totient is φ = 621325840.

The previous prime is 686011583. The next prime is 686011607. The reversal of 686011601 is 106110686.

686011601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686011601 is a prime.

It is a super-2 number, since 2×686011601² = 941223833413166402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686011607) 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, 112961 + ... + 118878.

It is an arithmetic number, because the mean of its divisors is an integer number (93895200).

Almost surely, 2^686011601 is an apocalyptic number.

It is an amenable number.

686011601 is a deficient number, since it is larger than the sum of its proper divisors (65149999).

686011601 is a wasteful number, since it uses less digits than its factorization.

686011601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232119.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 686011601 is about 26191.8231706004. The cubic root of 686011601 is about 881.9497064440.

The spelling of 686011601 in words is "six hundred eighty-six million, eleven thousand, six hundred one".