1966860 has 108 divisors (see below), whose sum is σ = 6971328. Its totient is φ = 447552.

The previous prime is 1966847. The next prime is 1966871. The reversal of 1966860 is 686691.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8709 + ... + 8931.

2^1966860 is an apocalyptic number.

1966860 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 1966860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3485664).

1966860 is an abundant number, since it is smaller than the sum of its proper divisors (5004468).

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

1966860 is a wasteful number, since it uses less digits than its factorization.

1966860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1966860 is about 1402.4478599934. The cubic root of 1966860 is about 125.2923291497.

It can be divided in two parts, 196 and 6860, that added together give a square (7056 = 84²).

The spelling of 1966860 in words is "one million, nine hundred sixty-six thousand, eight hundred sixty".