77340407 has 2 divisors, whose sum is σ = 77340408. Its totient is φ = 77340406.

The previous prime is 77340353. The next prime is 77340433. The reversal of 77340407 is 70404377.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77340407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77340437) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38670203 + 38670204.

It is an arithmetic number, because the mean of its divisors is an integer number (38670204).

Almost surely, 2^77340407 is an apocalyptic number.

77340407 is a deficient number, since it is larger than the sum of its proper divisors (1).

77340407 is an equidigital number, since it uses as much as digits as its factorization.

77340407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 77340407 is about 8794.3394862832. The cubic root of 77340407 is about 426.0580915879.

The spelling of 77340407 in words is "seventy-seven million, three hundred forty thousand, four hundred seven".