61304913 has 12 divisors (see below), whose sum is σ = 92401920. Its totient is φ = 39092856.

The previous prime is 61304861. The next prime is 61304921. The reversal of 61304913 is 31940316.

61304913 is a `hidden beast` number, since 613 + 0 + 49 + 1 + 3 = 666.

61304913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61304913 - 2⁸ = 61304657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61304213) 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 11 ways as a sum of consecutive naturals, for example, 147873 + ... + 148286.

It is an arithmetic number, because the mean of its divisors is an integer number (7700160).

Almost surely, 2^61304913 is an apocalyptic number.

It is an amenable number.

61304913 is a deficient number, since it is larger than the sum of its proper divisors (31097007).

61304913 is a wasteful number, since it uses less digits than its factorization.

61304913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296188 (or 296185 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 61304913 is about 7829.7453981595. The cubic root of 61304913 is about 394.3045242062.

The spelling of 61304913 in words is "sixty-one million, three hundred four thousand, nine hundred thirteen".