1000697920 has 28 divisors (see below), whose sum is σ = 2382912684. Its totient is φ = 400279040.

The previous prime is 1000697917. The next prime is 1000697921. The reversal of 1000697920 is 297960001.

It can be written as a sum of positive squares in 2 ways, for example, as 643941376 + 356756544 = 25376^2 + 18888^2 .

It is not an unprimeable number, because it can be changed into a prime (1000697921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1563271 + ... + 1563910.

Almost surely, 2^1000697920 is an apocalyptic number.

1000697920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000697920 is an abundant number, since it is smaller than the sum of its proper divisors (1382214764).

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

1000697920 is an equidigital number, since it uses as much as digits as its factorization.

1000697920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127198 (or 3127188 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 1000697920 is about 31633.8097610768. The cubic root of 1000697920 is about 1000.2325858996.

The spelling of 1000697920 in words is "one billion, six hundred ninety-seven thousand, nine hundred twenty".