611400404 has 12 divisors (see below), whose sum is σ = 1084608084. Its totient is φ = 301512384.

The previous prime is 611400403. The next prime is 611400437. The reversal of 611400404 is 404004116.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 196056004 + 415344400 = 14002^2 + 20380^2 .

It is a super-2 number, since 2×611400404² = 747620908022726432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611400403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046627 + ... + 1047210.

It is an arithmetic number, because the mean of its divisors is an integer number (90384007).

Almost surely, 2^611400404 is an apocalyptic number.

It is an amenable number.

611400404 is a deficient number, since it is larger than the sum of its proper divisors (473207680).

611400404 is a wasteful number, since it uses less digits than its factorization.

611400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093914 (or 2093912 counting only the distinct ones).

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

The square root of 611400404 is about 24726.5121681162. The cubic root of 611400404 is about 848.7411140812.

The spelling of 611400404 in words is "six hundred eleven million, four hundred thousand, four hundred four".