77353243 has 12 divisors (see below), whose sum is σ = 85312584. Its totient is φ = 70083200.

The previous prime is 77353217. The next prime is 77353249. The reversal of 77353243 is 34235377.

It is a de Polignac number, because none of the positive numbers 2^k-77353243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77353199 and 77353208.

It is not an unprimeable number, because it can be changed into a prime (77353249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41808 + ... + 43618.

It is an arithmetic number, because the mean of its divisors is an integer number (7109382).

Almost surely, 2^77353243 is an apocalyptic number.

77353243 is a deficient number, since it is larger than the sum of its proper divisors (7959341).

77353243 is a wasteful number, since it uses less digits than its factorization.

77353243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186 (or 2175 counting only the distinct ones).

The product of its digits is 52920, while the sum is 34.

The square root of 77353243 is about 8795.0692436160. The cubic root of 77353243 is about 426.0816608938.

The spelling of 77353243 in words is "seventy-seven million, three hundred fifty-three thousand, two hundred forty-three".