1640560624 has 80 divisors (see below), whose sum is σ = 3477456000. Its totient is φ = 746807040.

The previous prime is 1640560601. The next prime is 1640560633. The reversal of 1640560624 is 4260650461.

It is a super-2 number, since 2×1640560624² = 5382878322038538752, 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 1640560624.

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 15 ways as a sum of consecutive naturals, for example, 3341019 + ... + 3341509.

It is an arithmetic number, because the mean of its divisors is an integer number (43468200).

Almost surely, 2^1640560624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1640560624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1738728000).

1640560624 is an abundant number, since it is smaller than the sum of its proper divisors (1836895376).

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

1640560624 is a wasteful number, since it uses less digits than its factorization.

1640560624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1640560624 is about 40503.8346826569. The cubic root of 1640560624 is about 1179.4080685273.

The spelling of 1640560624 in words is "one billion, six hundred forty million, five hundred sixty thousand, six hundred twenty-four".