780904196 has 6 divisors (see below), whose sum is σ = 1366582350. Its totient is φ = 390452096.

The previous prime is 780904193. The next prime is 780904213. The reversal of 780904196 is 691409087.

It can be written as a sum of positive squares in only one way, i.e., 772284100 + 8620096 = 27790^2 + 2936^2 .

It is a super-2 number, since 2×780904196² = 1219622726660812832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (780904193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97613021 + ... + 97613028.

It is an arithmetic number, because the mean of its divisors is an integer number (227763725).

Almost surely, 2^780904196 is an apocalyptic number.

It is an amenable number.

780904196 is a deficient number, since it is larger than the sum of its proper divisors (585678154).

780904196 is a wasteful number, since it uses less digits than its factorization.

780904196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195226053 (or 195226051 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 780904196 is about 27944.6631040705. The cubic root of 780904196 is about 920.8719663041.

The spelling of 780904196 in words is "seven hundred eighty million, nine hundred four thousand, one hundred ninety-six".