1086780 has 48 divisors (see below), whose sum is σ = 3104640. Its totient is φ = 283968.

The previous prime is 1086769. The next prime is 1086791. The reversal of 1086780 is 876801.

It is an interprime number because it is at equal distance from previous prime (1086769) and next prime (1086791).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3387 + ... + 3693.

It is an arithmetic number, because the mean of its divisors is an integer number (64680).

2^1086780 is an apocalyptic number.

1086780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1086780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1552320).

1086780 is an abundant number, since it is smaller than the sum of its proper divisors (2017860).

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

1086780 is a wasteful number, since it uses less digits than its factorization.

1086780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1086780 is about 1042.4874099959. The cubic root of 1086780 is about 102.8128060676.

The spelling of 1086780 in words is "one million, eighty-six thousand, seven hundred eighty".