77340646 has 8 divisors (see below), whose sum is σ = 117742680. Its totient is φ = 38093088.

The previous prime is 77340643. The next prime is 77340661. The reversal of 77340646 is 64604377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77340643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288451 + ... + 288718.

It is an arithmetic number, because the mean of its divisors is an integer number (14717835).

Almost surely, 2^77340646 is an apocalyptic number.

77340646 is a deficient number, since it is larger than the sum of its proper divisors (40402034).

77340646 is a wasteful number, since it uses less digits than its factorization.

77340646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577238.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 77340646 is about 8794.3530745587. The cubic root of 77340646 is about 426.0585304606.

The spelling of 77340646 in words is "seventy-seven million, three hundred forty thousand, six hundred forty-six".