775871488 has 132 divisors (see below), whose sum is σ = 1848031600. Its totient is φ = 325441536.

The previous prime is 775871477. The next prime is 775871507. The reversal of 775871488 is 884178577.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

Its product of digits (3512320) is a multiple of the sum of its prime divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16507881 + ... + 16507927.

Almost surely, 2^775871488 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 775871488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924015800).

775871488 is an abundant number, since it is smaller than the sum of its proper divisors (1072160112).

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

775871488 is an frugal number, since it uses more digits than its factorization.

775871488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 56 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 55.

The square root of 775871488 is about 27854.4698028880. The cubic root of 775871488 is about 918.8894476167.

The spelling of 775871488 in words is "seven hundred seventy-five million, eight hundred seventy-one thousand, four hundred eighty-eight".