61782923 has 2 divisors, whose sum is σ = 61782924. Its totient is φ = 61782922.

The previous prime is 61782887. The next prime is 61782937. The reversal of 61782923 is 32928716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61782923 - 2¹⁸ = 61520779 is a prime.

It is not a weakly prime, because it can be changed into another prime (61782023) 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, 30891461 + 30891462.

It is an arithmetic number, because the mean of its divisors is an integer number (30891462).

Almost surely, 2^61782923 is an apocalyptic number.

61782923 is a deficient number, since it is larger than the sum of its proper divisors (1).

61782923 is an equidigital number, since it uses as much as digits as its factorization.

61782923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 61782923 is about 7860.2113839260. The cubic root of 61782923 is about 395.3267029522.

The spelling of 61782923 in words is "sixty-one million, seven hundred eighty-two thousand, nine hundred twenty-three".