61683133 has 2 divisors, whose sum is σ = 61683134. Its totient is φ = 61683132.

The previous prime is 61683119. The next prime is 61683137. The reversal of 61683133 is 33138616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57790404 + 3892729 = 7602^2 + 1973^2 .

It is a cyclic number.

It is not a de Polignac number, because 61683133 - 2¹³ = 61674941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61683095 and 61683104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61683137) 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 as a sum of consecutive naturals, namely, 30841566 + 30841567.

It is an arithmetic number, because the mean of its divisors is an integer number (30841567).

Almost surely, 2^61683133 is an apocalyptic number.

It is an amenable number.

61683133 is a deficient number, since it is larger than the sum of its proper divisors (1).

61683133 is an equidigital number, since it uses as much as digits as its factorization.

61683133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 61683133 is about 7853.8610249991. The cubic root of 61683133 is about 395.1137481520.

It can be divided in two parts, 61683 and 133, that added together give a palindrome (61816).

The spelling of 61683133 in words is "sixty-one million, six hundred eighty-three thousand, one hundred thirty-three".