780223641 has 16 divisors (see below), whose sum is σ = 1108629504. Its totient is φ = 486946064.

The previous prime is 780223603. The next prime is 780223651. The reversal of 780223641 is 146322087.

It is not a de Polignac number, because 780223641 - 2¹⁷ = 780092569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (780223651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117051 + ... + 123536.

It is an arithmetic number, because the mean of its divisors is an integer number (69289344).

Almost surely, 2^780223641 is an apocalyptic number.

It is an amenable number.

780223641 is a deficient number, since it is larger than the sum of its proper divisors (328405863).

780223641 is a wasteful number, since it uses less digits than its factorization.

780223641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240660.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 780223641 is about 27932.4836167499. The cubic root of 780223641 is about 920.6043764302.

The spelling of 780223641 in words is "seven hundred eighty million, two hundred twenty-three thousand, six hundred forty-one".