1771120560 has 240 divisors, whose sum is σ = 6127107840. Its totient is φ = 422822400.

The previous prime is 1771120553. The next prime is 1771120591. The reversal of 1771120560 is 650211771.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2061411 + ... + 2062269.

It is an arithmetic number, because the mean of its divisors is an integer number (25529616).

Almost surely, 2^1771120560 is an apocalyptic number.

1771120560 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 1771120560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3063553920).

1771120560 is an abundant number, since it is smaller than the sum of its proper divisors (4355987280).

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

1771120560 is a wasteful number, since it uses less digits than its factorization.

1771120560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 1771120560 is about 42084.6831994729. The cubic root of 1771120560 is about 1209.8997162067.

The spelling of 1771120560 in words is "one billion, seven hundred seventy-one million, one hundred twenty thousand, five hundred sixty".