6860989 has 2 divisors, whose sum is σ = 6860990. Its totient is φ = 6860988.

The previous prime is 6860977. The next prime is 6860999. The reversal of 6860989 is 9890686.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4708900 + 2152089 = 2170^2 + 1467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6860989 is a prime.

6860989 is a strobogrammatic number because it is the same when read upside-down.

6860989 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6860929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430494 + 3430495.

It is an arithmetic number, because the mean of its divisors is an integer number (3430495).

Almost surely, 2^6860989 is an apocalyptic number.

It is an amenable number.

6860989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6860989 is an equidigital number, since it uses as much as digits as its factorization.

6860989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 6860989 is about 2619.3489649148. The cubic root of 6860989 is about 190.0183638760.

The spelling of 6860989 in words is "six million, eight hundred sixty thousand, nine hundred eighty-nine".