1006646720 has 28 divisors (see below), whose sum is σ = 2397078264. Its totient is φ = 402658560.

The previous prime is 1006646701. The next prime is 1006646723. The reversal of 1006646720 is 276466001.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006646723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1572566 + ... + 1573205.

It is an arithmetic number, because the mean of its divisors is an integer number (85609938).

Almost surely, 2^1006646720 is an apocalyptic number.

1006646720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1006646720 is an abundant number, since it is smaller than the sum of its proper divisors (1390431544).

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

1006646720 is an equidigital number, since it uses as much as digits as its factorization.

1006646720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145788 (or 3145778 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1006646720 is about 31727.6964181139. The cubic root of 1006646720 is about 1002.2106826144.

The spelling of 1006646720 in words is "one billion, six million, six hundred forty-six thousand, seven hundred twenty".