77243743 has 4 divisors (see below), whose sum is σ = 77344960. Its totient is φ = 77142528.

The previous prime is 77243731. The next prime is 77243807. The reversal of 77243743 is 34734277.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77243743 - 2⁵ = 77243711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77240743) 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, 49455 + ... + 50992.

It is an arithmetic number, because the mean of its divisors is an integer number (19336240).

Almost surely, 2^77243743 is an apocalyptic number.

77243743 is a deficient number, since it is larger than the sum of its proper divisors (101217).

77243743 is a wasteful number, since it uses less digits than its factorization.

77243743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101216.

The product of its digits is 98784, while the sum is 37.

The square root of 77243743 is about 8788.8419601219. The cubic root of 77243743 is about 425.8805145143.

The spelling of 77243743 in words is "seventy-seven million, two hundred forty-three thousand, seven hundred forty-three".