771740632 has 64 divisors (see below), whose sum is σ = 1671516000. Its totient is φ = 331029504.

The previous prime is 771740623. The next prime is 771740647. The reversal of 771740632 is 236047177.

It is a junction number, because it is equal to n+sod(n) for n = 771740591 and 771740600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101044 + ... + 108412.

Almost surely, 2^771740632 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 771740632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835758000).

771740632 is an abundant number, since it is smaller than the sum of its proper divisors (899775368).

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

771740632 is a wasteful number, since it uses less digits than its factorization.

771740632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7460 (or 7456 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 771740632 is about 27780.2201575150. The cubic root of 771740632 is about 917.2557765287.

The spelling of 771740632 in words is "seven hundred seventy-one million, seven hundred forty thousand, six hundred thirty-two".