1187660 has 24 divisors (see below), whose sum is σ = 2553936. Its totient is φ = 463680.

The previous prime is 1187657. The next prime is 1187687. The reversal of 1187660 is 667811.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (106414).

2^1187660 is an apocalyptic number.

1187660 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 1187660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276968).

1187660 is an abundant number, since it is smaller than the sum of its proper divisors (1366276).

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

1187660 is a wasteful number, since it uses less digits than its factorization.

1187660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1431 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1187660 is about 1089.7981464473. The cubic root of 1187660 is about 105.9003454052.

The spelling of 1187660 in words is "one million, one hundred eighty-seven thousand, six hundred sixty".