1055646 has 32 divisors (see below), whose sum is σ = 2380320. Its totient is φ = 346752.

The previous prime is 1055611. The next prime is 1055671. The reversal of 1055646 is 6465501.

It is a happy number.

1055646 is a `hidden beast` number, since 10 + 5 + 5 + 646 = 666.

It is a super-2 number, since 2×1055646² = 2228776954632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) 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 (27).

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, 6016 + ... + 6188.

It is an arithmetic number, because the mean of its divisors is an integer number (74385).

2^1055646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190160).

1055646 is an abundant number, since it is smaller than the sum of its proper divisors (1324674).

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

1055646 is a wasteful number, since it uses less digits than its factorization.

1055646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1055646 is about 1027.4463489643. The cubic root of 1055646 is about 101.8214870700.

It can be divided in two parts, 105564 and 6, that added together give a triangular number (105570 = T₄₅₉).

The spelling of 1055646 in words is "one million, fifty-five thousand, six hundred forty-six".