77423741 has 2 divisors, whose sum is σ = 77423742. Its totient is φ = 77423740.

The previous prime is 77423719. The next prime is 77423743. The reversal of 77423741 is 14732477.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76492516 + 931225 = 8746^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 77423741 - 2⁶ = 77423677 is a prime.

Together with 77423743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77423743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38711870 + 38711871.

It is an arithmetic number, because the mean of its divisors is an integer number (38711871).

Almost surely, 2^77423741 is an apocalyptic number.

It is an amenable number.

77423741 is a deficient number, since it is larger than the sum of its proper divisors (1).

77423741 is an equidigital number, since it uses as much as digits as its factorization.

77423741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928, while the sum is 35.

The square root of 77423741 is about 8799.0761446870. The cubic root of 77423741 is about 426.2110619941.

The spelling of 77423741 in words is "seventy-seven million, four hundred twenty-three thousand, seven hundred forty-one".