77340405 has 16 divisors (see below), whose sum is σ = 124882560. Its totient is φ = 40868928.

The previous prime is 77340353. The next prime is 77340407. The reversal of 77340405 is 50404377.

It is not a de Polignac number, because 77340405 - 2⁹ = 77339893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77340407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22017 + ... + 25286.

It is an arithmetic number, because the mean of its divisors is an integer number (7805160).

Almost surely, 2^77340405 is an apocalyptic number.

It is an amenable number.

77340405 is a deficient number, since it is larger than the sum of its proper divisors (47542155).

77340405 is a wasteful number, since it uses less digits than its factorization.

77340405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47420.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 77340405 is about 8794.3393725737. The cubic root of 77340405 is about 426.0580879153.

The spelling of 77340405 in words is "seventy-seven million, three hundred forty thousand, four hundred five".