1776660480 has 728 divisors, whose sum is σ = 7735187232. Its totient is φ = 382205952.

The previous prime is 1776660449. The next prime is 1776660481. The reversal of 1776660480 is 840666771.

It is a super-2 number, since 2×1776660480² = 6313044922387660800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1776660481) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 104509432 + ... + 104509448.

Almost surely, 2^1776660480 is an apocalyptic number.

1776660480 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 1776660480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3867593616).

1776660480 is an abundant number, since it is smaller than the sum of its proper divisors (5958526752).

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

1776660480 is an frugal number, since it uses more digits than its factorization.

1776660480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 1776660480 is about 42150.4505314000. The cubic root of 1776660480 is about 1211.1598922703.

The spelling of 1776660480 in words is "one billion, seven hundred seventy-six million, six hundred sixty thousand, four hundred eighty".