77243345 has 8 divisors (see below), whose sum is σ = 93248064. Its totient is φ = 61423984.

The previous prime is 77243339. The next prime is 77243347. The reversal of 77243345 is 54334277.

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

It is a cyclic number.

It is not a de Polignac number, because 77243345 - 2⁶ = 77243281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77243347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45419 + ... + 47088.

It is an arithmetic number, because the mean of its divisors is an integer number (11656008).

Almost surely, 2^77243345 is an apocalyptic number.

It is an amenable number.

77243345 is a deficient number, since it is larger than the sum of its proper divisors (16004719).

77243345 is a wasteful number, since it uses less digits than its factorization.

77243345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92679.

The product of its digits is 70560, while the sum is 35.

The square root of 77243345 is about 8788.8193177468. The cubic root of 77243345 is about 425.8797830603.

The spelling of 77243345 in words is "seventy-seven million, two hundred forty-three thousand, three hundred forty-five".