1061660 has 24 divisors (see below), whose sum is σ = 2254560. Its totient is φ = 419904.

The previous prime is 1061651. The next prime is 1061677. The reversal of 1061660 is 661601.

It is a super-2 number, since 2×1061660² = 2254243911200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 1937 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (93940).

2^1061660 is an apocalyptic number.

1061660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061660 is an abundant number, since it is smaller than the sum of its proper divisors (1192900).

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

1061660 is a wasteful number, since it uses less digits than its factorization.

1061660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1061660 is about 1030.3688659893. The cubic root of 1061660 is about 102.0144795541.

The spelling of 1061660 in words is "one million, sixty-one thousand, six hundred sixty".