61373313 has 12 divisors (see below), whose sum is σ = 88872420. Its totient is φ = 40813056.

The previous prime is 61373303. The next prime is 61373317. The reversal of 61373313 is 31337316.

61373313 is a `hidden beast` number, since 613 + 7 + 33 + 13 = 666.

61373313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56655729 + 4717584 = 7527^2 + 2172^2 .

It is not a de Polignac number, because 61373313 - 2⁴ = 61373297 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61373317) 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, 4656 + ... + 12017.

It is an arithmetic number, because the mean of its divisors is an integer number (7406035).

Almost surely, 2^61373313 is an apocalyptic number.

It is an amenable number.

61373313 is a deficient number, since it is larger than the sum of its proper divisors (27499107).

61373313 is a wasteful number, since it uses less digits than its factorization.

61373313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17088 (or 17085 counting only the distinct ones).

The product of its digits is 3402, while the sum is 27.

The square root of 61373313 is about 7834.1121385898. The cubic root of 61373313 is about 394.4511160737.

The spelling of 61373313 in words is "sixty-one million, three hundred seventy-three thousand, three hundred thirteen".