73661923 has 2 divisors, whose sum is σ = 73661924. Its totient is φ = 73661922.

The previous prime is 73661909. The next prime is 73661933. The reversal of 73661923 is 32916637.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73661923 - 2¹³ = 73653731 is a prime.

It is not a weakly prime, because it can be changed into another prime (73661933) 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, 36830961 + 36830962.

It is an arithmetic number, because the mean of its divisors is an integer number (36830962).

Almost surely, 2^73661923 is an apocalyptic number.

73661923 is a deficient number, since it is larger than the sum of its proper divisors (1).

73661923 is an equidigital number, since it uses as much as digits as its factorization.

73661923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The square root of 73661923 is about 8582.6524454856. The cubic root of 73661923 is about 419.1933174540.

The spelling of 73661923 in words is "seventy-three million, six hundred sixty-one thousand, nine hundred twenty-three".