769986 has 60 divisors (see below), whose sum is σ = 2027718. Its totient is φ = 217728.

The previous prime is 769973. The next prime is 769987. The reversal of 769986 is 689967.

It can be written as a sum of positive squares in only one way, i.e., 670761 + 99225 = 819^2 + 315^2 .

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 769986.

It is not an unprimeable number, because it can be changed into a prime (769987) by changing a digit.

769986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7890 + ... + 7986.

2⁷⁶⁹⁹⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 769986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013859).

769986 is an abundant number, since it is smaller than the sum of its proper divisors (1257732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

769986 is a wasteful number, since it uses less digits than its factorization.

769986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 109 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 769986 is about 877.4884614626. The cubic root of 769986 is about 91.6560090456.

The spelling of 769986 in words is "seven hundred sixty-nine thousand, nine hundred eighty-six".