74077769 has 2 divisors, whose sum is σ = 74077770. Its totient is φ = 74077768.

The previous prime is 74077739. The next prime is 74077771. The reversal of 74077769 is 96777047.

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., 70224400 + 3853369 = 8380^2 + 1963^2 .

It is a cyclic number.

It is not a de Polignac number, because 74077769 - 2¹² = 74073673 is a prime.

It is a super-2 number, since 2×74077769² = 10975031720034722, which contains 22 as substring.

Together with 74077771, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (74077709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37038884 + 37038885.

It is an arithmetic number, because the mean of its divisors is an integer number (37038885).

Almost surely, 2^74077769 is an apocalyptic number.

It is an amenable number.

74077769 is a deficient number, since it is larger than the sum of its proper divisors (1).

74077769 is an equidigital number, since it uses as much as digits as its factorization.

74077769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518616, while the sum is 47.

The square root of 74077769 is about 8606.8443113606. The cubic root of 74077769 is about 419.9806661546.

The spelling of 74077769 in words is "seventy-four million, seventy-seven thousand, seven hundred sixty-nine".