780507241 has 2 divisors, whose sum is σ = 780507242. Its totient is φ = 780507240.

The previous prime is 780507227. The next prime is 780507257. The reversal of 780507241 is 142705087.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 680427225 + 100080016 = 26085^2 + 10004^2 .

It is a cyclic number.

It is not a de Polignac number, because 780507241 - 2²¹ = 778410089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780507197 and 780507206.

It is not a weakly prime, because it can be changed into another prime (780502241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390253620 + 390253621.

It is an arithmetic number, because the mean of its divisors is an integer number (390253621).

Almost surely, 2^780507241 is an apocalyptic number.

It is an amenable number.

780507241 is a deficient number, since it is larger than the sum of its proper divisors (1).

780507241 is an equidigital number, since it uses as much as digits as its factorization.

780507241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 780507241 is about 27937.5596822629. The cubic root of 780507241 is about 920.7159050401.

The spelling of 780507241 in words is "seven hundred eighty million, five hundred seven thousand, two hundred forty-one".