860646069 has 6 divisors (see below), whose sum is σ = 1243155446. Its totient is φ = 573764040.

The previous prime is 860646049. The next prime is 860646089. The reversal of 860646069 is 960646068.

It is an interprime number because it is at equal distance from previous prime (860646049) and next prime (860646089).

It can be written as a sum of positive squares in only one way, i.e., 643231044 + 217415025 = 25362^2 + 14745^2 .

It is not a de Polignac number, because 860646069 - 2⁵ = 860646037 is a prime.

It is a super-2 number, since 2×860646069² = 1481423312170305522, 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 (860646019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47813662 + ... + 47813679.

Almost surely, 2^860646069 is an apocalyptic number.

It is an amenable number.

860646069 is a deficient number, since it is larger than the sum of its proper divisors (382509377).

860646069 is a wasteful number, since it uses less digits than its factorization.

860646069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95627347 (or 95627344 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 860646069 is about 29336.7699142220. The cubic root of 860646069 is about 951.2066178586.

Subtracting 860646069 from its reverse (960646068), we obtain a palindrome (99999999).

The spelling of 860646069 in words is "eight hundred sixty million, six hundred forty-six thousand, sixty-nine".