611040388 has 18 divisors (see below), whose sum is σ = 1243904046. Its totient is φ = 261874368.

The previous prime is 611040383. The next prime is 611040407. The reversal of 611040388 is 883040116.

It can be written as a sum of positive squares in only one way, i.e., 575136324 + 35904064 = 23982^2 + 5992^2 .

It is not an unprimeable number, because it can be changed into a prime (611040383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1558581 + ... + 1558972.

Almost surely, 2^611040388 is an apocalyptic number.

It is an amenable number.

611040388 is an abundant number, since it is smaller than the sum of its proper divisors (632863658).

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

611040388 is a wasteful number, since it uses less digits than its factorization.

611040388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117571 (or 3117562 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 611040388 is about 24719.2311369104. The cubic root of 611040388 is about 848.5744909355.

The spelling of 611040388 in words is "six hundred eleven million, forty thousand, three hundred eighty-eight".