61404100 has 18 divisors (see below), whose sum is σ = 133247114. Its totient is φ = 24561600.

The previous prime is 61404097. The next prime is 61404131. The reversal of 61404100 is 140416.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12292036 + 49112064 = 3506^2 + 7008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306921 + ... + 307120.

Almost surely, 2^61404100 is an apocalyptic number.

It is an amenable number.

61404100 is an abundant number, since it is smaller than the sum of its proper divisors (71843014).

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

61404100 is a wasteful number, since it uses less digits than its factorization.

61404100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614055 (or 614048 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 61404100 is about 7836.0768245341. The cubic root of 61404100 is about 394.5170618725.

Adding to 61404100 its reverse (140416), we get a palindrome (61544516).

It can be divided in two parts, 61404 and 100, that added together give a square (61504 = 248²).

The spelling of 61404100 in words is "sixty-one million, four hundred four thousand, one hundred".