771134340 has 48 divisors (see below), whose sum is σ = 2253057408. Its totient is φ = 196694784.

The previous prime is 771134339. The next prime is 771134369. The reversal of 771134340 is 43431177.

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

It is a junction number, because it is equal to n+sod(n) for n = 771134298 and 771134307.

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, 278017 + ... + 280776.

It is an arithmetic number, because the mean of its divisors is an integer number (46938696).

Almost surely, 2^771134340 is an apocalyptic number.

It is an amenable number.

771134340 is an abundant number, since it is smaller than the sum of its proper divisors (1481923068).

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

771134340 is a wasteful number, since it uses less digits than its factorization.

771134340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558828 (or 558826 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 771134340 is about 27769.3057169242. The cubic root of 771134340 is about 917.0155099100.

The spelling of 771134340 in words is "seven hundred seventy-one million, one hundred thirty-four thousand, three hundred forty".