1146640 has 40 divisors (see below), whose sum is σ = 2910528. Its totient is φ = 416640.

The previous prime is 1146581. The next prime is 1146661. The reversal of 1146640 is 466411.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×1146640³ = 4522749333560832000, which contains 333 as substring.

It is a Smith number, since the sum of its digits (22) 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 (22).

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, 229 + ... + 1531.

2^1146640 is an apocalyptic number.

1146640 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 1146640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455264).

1146640 is an abundant number, since it is smaller than the sum of its proper divisors (1763888).

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

1146640 is a wasteful number, since it uses less digits than its factorization.

1146640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1146640 is about 1070.8127754187. The cubic root of 1146640 is about 104.6668199294. Note that the first 3 decimals are identical.

It can be divided in two parts, 1 and 146640, that added together give a palindrome (146641).

The spelling of 1146640 in words is "one million, one hundred forty-six thousand, six hundred forty".