1081658 has 16 divisors (see below), whose sum is σ = 1707264. Its totient is φ = 513360.

The previous prime is 1081657. The next prime is 1081679. The reversal of 1081658 is 8561801.

It is a self number, because there is not a number n which added to its sum of digits gives 1081658.

It is not an unprimeable number, because it can be changed into a prime (1081657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3323 + ... + 3633.

It is an arithmetic number, because the mean of its divisors is an integer number (106704).

2^1081658 is an apocalyptic number.

1081658 is a deficient number, since it is larger than the sum of its proper divisors (625606).

1081658 is a wasteful number, since it uses less digits than its factorization.

1081658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1081658 is about 1040.0278842416. The cubic root of 1081658 is about 102.6510325512.

The spelling of 1081658 in words is "one million, eighty-one thousand, six hundred fifty-eight".