611044040 has 16 divisors (see below), whose sum is σ = 1374849180. Its totient is φ = 244417600.

The previous prime is 611044037. The next prime is 611044067. The reversal of 611044040 is 40440116.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 610979524 + 64516 = 24718^2 + 254^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7638011 + ... + 7638090.

Almost surely, 2^611044040 is an apocalyptic number.

It is an amenable number.

611044040 is an abundant number, since it is smaller than the sum of its proper divisors (763805140).

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

611044040 is a wasteful number, since it uses less digits than its factorization.

611044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15276112 (or 15276108 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 611044040 is about 24719.3050064115. The cubic root of 611044040 is about 848.5761814882.

Adding to 611044040 its reverse (40440116), we get a palindrome (651484156).

The spelling of 611044040 in words is "six hundred eleven million, forty-four thousand, forty".