1560649664 has 168 divisors, whose sum is σ = 3852428160. Its totient is φ = 612693504.

The previous prime is 1560649663. The next prime is 1560649687. The reversal of 1560649664 is 4669460651.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1560649663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18802967 + ... + 18803049.

It is an arithmetic number, because the mean of its divisors is an integer number (22931120).

Almost surely, 2^1560649664 is an apocalyptic number.

1560649664 is a gapful number since it is divisible by the number (14) 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 1560649664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1926214080).

1560649664 is an abundant number, since it is smaller than the sum of its proper divisors (2291778496).

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

1560649664 is an equidigital number, since it uses as much as digits as its factorization.

1560649664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 1560649664 is about 39505.0587140432. The cubic root of 1560649664 is about 1159.9389741974.

The spelling of 1560649664 in words is "one billion, five hundred sixty million, six hundred forty-nine thousand, six hundred sixty-four".