1064640500 has 96 divisors (see below), whose sum is σ = 2899024128. Its totient is φ = 331824000.

The previous prime is 1064640469. The next prime is 1064640523. The reversal of 1064640500 is 50464601.

It is a happy number.

It is a super-2 number, since 2×1064640500² = 2266918788480500000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1064640500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24674 + ... + 52326.

It is an arithmetic number, because the mean of its divisors is an integer number (30198168).

Almost surely, 2^1064640500 is an apocalyptic number.

1064640500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1064640500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449512064).

1064640500 is an abundant number, since it is smaller than the sum of its proper divisors (1834383628).

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

1064640500 is a wasteful number, since it uses less digits than its factorization.

1064640500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27690 (or 27678 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1064640500 is about 32628.8292771898. The cubic root of 1064640500 is about 1021.0985536987.

The spelling of 1064640500 in words is "one billion, sixty-four million, six hundred forty thousand, five hundred".