780726345 has 32 divisors (see below), whose sum is σ = 1434058752. Its totient is φ = 355292352.

The previous prime is 780726311. The next prime is 780726347. The reversal of 780726345 is 543627087.

It is not a de Polignac number, because 780726345 - 2¹⁹ = 780202057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780726297 and 780726306.

It is not an unprimeable number, because it can be changed into a prime (780726347) 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 31 ways as a sum of consecutive naturals, for example, 6744 + ... + 40086.

It is an arithmetic number, because the mean of its divisors is an integer number (44814336).

Almost surely, 2^780726345 is an apocalyptic number.

It is an amenable number.

780726345 is a deficient number, since it is larger than the sum of its proper divisors (653332407).

780726345 is a wasteful number, since it uses less digits than its factorization.

780726345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33581.

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 780726345 is about 27941.4807231113. The cubic root of 780726345 is about 920.8020514388.

The spelling of 780726345 in words is "seven hundred eighty million, seven hundred twenty-six thousand, three hundred forty-five".