1064505720 has 32 divisors (see below), whose sum is σ = 3193517520. Its totient is φ = 283868160.

The previous prime is 1064505719. The next prime is 1064505731. The reversal of 1064505720 is 275054601.

1064505720 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1064505720² = 2266344855825436800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4435321 + ... + 4435560.

Almost surely, 2^1064505720 is an apocalyptic number.

1064505720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1064505720 is an abundant number, since it is smaller than the sum of its proper divisors (2129011800).

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

1064505720 is a wasteful number, since it uses less digits than its factorization.

1064505720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8870895 (or 8870891 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1064505720 is about 32626.7638603647. The cubic root of 1064505720 is about 1021.0554626362.

The spelling of 1064505720 in words is "one billion, sixty-four million, five hundred five thousand, seven hundred twenty".