1020634664 has 32 divisors (see below), whose sum is σ = 2188211520. Its totient is φ = 437187456.

The previous prime is 1020634663. The next prime is 1020634697. The reversal of 1020634664 is 4664360201.

1020634664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1020634664.

It is not an unprimeable number, because it can be changed into a prime (1020634663) 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, 146852 + ... + 153644.

It is an arithmetic number, because the mean of its divisors is an integer number (68381610).

Almost surely, 2^1020634664 is an apocalyptic number.

1020634664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1020634664 is an abundant number, since it is smaller than the sum of its proper divisors (1167576856).

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

1020634664 is a wasteful number, since it uses less digits than its factorization.

1020634664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489 (or 9485 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1020634664 is about 31947.3733505589. The cubic root of 1020634664 is about 1006.8314464019.

Adding to 1020634664 its reverse (4664360201), we get a palindrome (5684994865).

The spelling of 1020634664 in words is "one billion, twenty million, six hundred thirty-four thousand, six hundred sixty-four".