1064640 has 56 divisors (see below), whose sum is σ = 3383280. Its totient is φ = 283648.

The previous prime is 1064629. The next prime is 1064653. The reversal of 1064640 is 464601.

It is a super-2 number, since 2×1064640² = 2266916659200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406 + ... + 1514.

2^1064640 is an apocalyptic number.

1064640 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 1064640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1691640).

1064640 is an abundant number, since it is smaller than the sum of its proper divisors (2318640).

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

1064640 is a wasteful number, since it uses less digits than its factorization.

1064640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1064640 is about 1031.8139367153. The cubic root of 1064640 is about 102.1098393848.

The spelling of 1064640 in words is "one million, sixty-four thousand, six hundred forty".