711139940 has 36 divisors (see below), whose sum is σ = 1737215676. Its totient is φ = 243819072.

The previous prime is 711139927. The next prime is 711139951. The reversal of 711139940 is 49931117.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 454627684 + 256512256 = 21322^2 + 16016^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 711139940.

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, 361847 + ... + 363806.

It is an arithmetic number, because the mean of its divisors is an integer number (48255991).

Almost surely, 2^711139940 is an apocalyptic number.

711139940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

711139940 is an abundant number, since it is smaller than the sum of its proper divisors (1026075736).

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

711139940 is a wasteful number, since it uses less digits than its factorization.

711139940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725676 (or 725667 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 711139940 is about 26667.2072028550. The cubic root of 711139940 is about 892.5893284933.

The spelling of 711139940 in words is "seven hundred eleven million, one hundred thirty-nine thousand, nine hundred forty".