61813683 has 12 divisors (see below), whose sum is σ = 94538808. Its totient is φ = 38784960.

The previous prime is 61813681. The next prime is 61813711. The reversal of 61813683 is 38631816.

61813683 is a `hidden beast` number, since 618 + 1 + 36 + 8 + 3 = 666.

It is not a de Polignac number, because 61813683 - 2¹ = 61813681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61813681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201853 + ... + 202158.

It is an arithmetic number, because the mean of its divisors is an integer number (7878234).

Almost surely, 2^61813683 is an apocalyptic number.

61813683 is a deficient number, since it is larger than the sum of its proper divisors (32725125).

61813683 is a wasteful number, since it uses less digits than its factorization.

61813683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404034 (or 404031 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 61813683 is about 7862.1678308212. The cubic root of 61813683 is about 395.3922994594.

The spelling of 61813683 in words is "sixty-one million, eight hundred thirteen thousand, six hundred eighty-three".