1560811680 has 240 divisors, whose sum is σ = 5578572384. Its totient is φ = 410918400.

The previous prime is 1560811649. The next prime is 1560811691. The reversal of 1560811680 is 861180651.

1560811680 is a `hidden beast` number, since 1 + 560 + 8 + 1 + 16 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×1560811680² = 4872266200848844800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1074955 + ... + 1076405.

Almost surely, 2^1560811680 is an apocalyptic number.

1560811680 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 1560811680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2789286192).

1560811680 is an abundant number, since it is smaller than the sum of its proper divisors (4017760704).

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

1560811680 is a wasteful number, since it uses less digits than its factorization.

1560811680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1560811680 is about 39507.1092336557. The cubic root of 1560811680 is about 1159.9791117919.

The spelling of 1560811680 in words is "one billion, five hundred sixty million, eight hundred eleven thousand, six hundred eighty".