771747480 has 512 divisors, whose sum is σ = 3151872000. Its totient is φ = 164229120.

The previous prime is 771747421. The next prime is 771747503. The reversal of 771747480 is 84747177.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8671276 + ... + 8671364.

It is an arithmetic number, because the mean of its divisors is an integer number (6156000).

Almost surely, 2^771747480 is an apocalyptic number.

771747480 is a gapful number since it is divisible by the number (70) 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 771747480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1575936000).

771747480 is an abundant number, since it is smaller than the sum of its proper divisors (2380124520).

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

771747480 is a wasteful number, since it uses less digits than its factorization.

771747480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 45.

The square root of 771747480 is about 27780.3434104044. The cubic root of 771747480 is about 917.2584895944.

The spelling of 771747480 in words is "seven hundred seventy-one million, seven hundred forty-seven thousand, four hundred eighty".