771240740 has 24 divisors (see below), whose sum is σ = 1621165560. Its totient is φ = 308199168.

The previous prime is 771240737. The next prime is 771240773. The reversal of 771240740 is 47042177.

771240740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 214563904 + 556676836 = 14648^2 + 23594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 771240697 and 771240706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3344 + ... + 39416.

It is an arithmetic number, because the mean of its divisors is an integer number (67548565).

Almost surely, 2^771240740 is an apocalyptic number.

It is an amenable number.

771240740 is an abundant number, since it is smaller than the sum of its proper divisors (849924820).

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

771240740 is a wasteful number, since it uses less digits than its factorization.

771240740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37151 (or 37149 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 771240740 is about 27771.2214351476. The cubic root of 771240740 is about 917.0576841279.

The spelling of 771240740 in words is "seven hundred seventy-one million, two hundred forty thousand, seven hundred forty".