685101059 has 2 divisors, whose sum is σ = 685101060. Its totient is φ = 685101058.

The previous prime is 685101047. The next prime is 685101073. The reversal of 685101059 is 950101586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685101059 - 2¹⁶ = 685035523 is a prime.

It is a super-2 number, since 2×685101059² = 938726922085842962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (685101029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342550529 + 342550530.

It is an arithmetic number, because the mean of its divisors is an integer number (342550530).

Almost surely, 2^685101059 is an apocalyptic number.

685101059 is a deficient number, since it is larger than the sum of its proper divisors (1).

685101059 is an equidigital number, since it uses as much as digits as its factorization.

685101059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 685101059 is about 26174.4352183576. The cubic root of 685101059 is about 881.5593302427.

The spelling of 685101059 in words is "six hundred eighty-five million, one hundred one thousand, fifty-nine".