1078641 has 6 divisors (see below), whose sum is σ = 1558050. Its totient is φ = 719088.

The previous prime is 1078589. The next prime is 1078643. The reversal of 1078641 is 1468701.

It is a happy number.

1078641 is a `hidden beast` number, since 10 + 7 + 8 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 848241 + 230400 = 921^2 + 480^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1078641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1078643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59916 + ... + 59933.

It is an arithmetic number, because the mean of its divisors is an integer number (259675).

2^1078641 is an apocalyptic number.

It is an amenable number.

1078641 is a deficient number, since it is larger than the sum of its proper divisors (479409).

1078641 is a wasteful number, since it uses less digits than its factorization.

1078641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119855 (or 119852 counting only the distinct ones).

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

The square root of 1078641 is about 1038.5764295419. The cubic root of 1078641 is about 102.5555043428. Note that the first 4 decimals are identical.

The spelling of 1078641 in words is "one million, seventy-eight thousand, six hundred forty-one".