780683743 has 4 divisors (see below), whose sum is σ = 892210000. Its totient is φ = 669157488.

The previous prime is 780683731. The next prime is 780683759. The reversal of 780683743 is 347386087.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-780683743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 780683693 and 780683702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780686743) 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, 55763118 + ... + 55763131.

It is an arithmetic number, because the mean of its divisors is an integer number (223052500).

Almost surely, 2^780683743 is an apocalyptic number.

780683743 is a deficient number, since it is larger than the sum of its proper divisors (111526257).

780683743 is a wasteful number, since it uses less digits than its factorization.

780683743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111526256.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 780683743 is about 27940.7183694335. The cubic root of 780683743 is about 920.7853026241.

The spelling of 780683743 in words is "seven hundred eighty million, six hundred eighty-three thousand, seven hundred forty-three".