840970 has 16 divisors (see below), whose sum is σ = 1630440. Its totient is φ = 310464.

The previous prime is 840967. The next prime is 840979. The reversal of 840970 is 79048.

It can be written as a sum of positive squares in 4 ways, for example, as 294849 + 546121 = 543^2 + 739^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3105 + ... + 3364.

2⁸⁴⁰⁹⁷⁰ is an apocalyptic number.

840970 is a deficient number, since it is larger than the sum of its proper divisors (789470).

840970 is a wasteful number, since it uses less digits than its factorization.

840970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 840970 is about 917.0441646944. The cubic root of 840970 is about 94.3901843907.

The spelling of 840970 in words is "eight hundred forty thousand, nine hundred seventy".