77733923 has 2 divisors, whose sum is σ = 77733924. Its totient is φ = 77733922.

The previous prime is 77733913. The next prime is 77733967. The reversal of 77733923 is 32933777.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77733923 - 2¹⁰ = 77732899 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (77733913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38866961 + 38866962.

It is an arithmetic number, because the mean of its divisors is an integer number (38866962).

Almost surely, 2^77733923 is an apocalyptic number.

77733923 is a deficient number, since it is larger than the sum of its proper divisors (1).

77733923 is an equidigital number, since it uses as much as digits as its factorization.

77733923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 166698, while the sum is 41.

The square root of 77733923 is about 8816.6843541095. The cubic root of 77733923 is about 426.7794787009.

The spelling of 77733923 in words is "seventy-seven million, seven hundred thirty-three thousand, nine hundred twenty-three".