685112061 has 4 divisors (see below), whose sum is σ = 913482752. Its totient is φ = 456741372.

The previous prime is 685112027. The next prime is 685112069. The reversal of 685112061 is 160211586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 685112061 - 2¹³ = 685103869 is a prime.

It is a super-2 number, since 2×685112061² = 938757072255335442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685112069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114185341 + ... + 114185346.

It is an arithmetic number, because the mean of its divisors is an integer number (228370688).

Almost surely, 2^685112061 is an apocalyptic number.

It is an amenable number.

685112061 is a deficient number, since it is larger than the sum of its proper divisors (228370691).

685112061 is a wasteful number, since it uses less digits than its factorization.

685112061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228370690.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 685112061 is about 26174.6453844173. The cubic root of 685112061 is about 881.5640491883.

The spelling of 685112061 in words is "six hundred eighty-five million, one hundred twelve thousand, sixty-one".