61973111 has 2 divisors, whose sum is σ = 61973112. Its totient is φ = 61973110.

The previous prime is 61973083. The next prime is 61973147. The reversal of 61973111 is 11137916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61973111 - 2⁶ = 61973047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61973311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30986555 + 30986556.

It is an arithmetic number, because the mean of its divisors is an integer number (30986556).

Almost surely, 2^61973111 is an apocalyptic number.

61973111 is a deficient number, since it is larger than the sum of its proper divisors (1).

61973111 is an equidigital number, since it uses as much as digits as its factorization.

61973111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 29.

The square root of 61973111 is about 7872.3002356363. The cubic root of 61973111 is about 395.7319356259.

The spelling of 61973111 in words is "sixty-one million, nine hundred seventy-three thousand, one hundred eleven".