1071648 has 54 divisors (see below), whose sum is σ = 3098277. Its totient is φ = 351360.

The previous prime is 1071643. The next prime is 1071659. The reversal of 1071648 is 8461701.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1071648 is a `hidden beast` number, since 10 + 7 + 1 + 648 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 725904 + 345744 = 852^2 + 588^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=732.

It is a super-2 number, since 2×1071648² = 2296858871808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17538 + ... + 17598.

2^1071648 is an apocalyptic number.

1071648 is a gapful number since it is divisible by the number (18) 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 1071648

1071648 is an abundant number, since it is smaller than the sum of its proper divisors (2026629).

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

1071648 is an equidigital number, since it uses as much as digits as its factorization.

1071648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1071648 is about 1035.2043276571. The cubic root of 1071648 is about 102.3333958155. Note that the first 4 decimals are identical.

The spelling of 1071648 in words is "one million, seventy-one thousand, six hundred forty-eight".