61404684 has 24 divisors (see below), whose sum is σ = 156303168. Its totient is φ = 18607440.

The previous prime is 61404683. The next prime is 61404689. The reversal of 61404684 is 48640416.

61404684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (61404683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232462 + ... + 232725.

It is an arithmetic number, because the mean of its divisors is an integer number (6512632).

Almost surely, 2^61404684 is an apocalyptic number.

It is an amenable number.

61404684 is an abundant number, since it is smaller than the sum of its proper divisors (94898484).

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

61404684 is a wasteful number, since it uses less digits than its factorization.

61404684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465205 (or 465203 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 61404684 is about 7836.1140879903. The cubic root of 61404684 is about 394.5183125883.

The spelling of 61404684 in words is "sixty-one million, four hundred four thousand, six hundred eighty-four".