781349068 has 6 divisors (see below), whose sum is σ = 1367360876. Its totient is φ = 390674532.

The previous prime is 781349033. The next prime is 781349069. The reversal of 781349068 is 860943187.

It is a happy number.

It is a super-2 number, since 2×781349068² = 1221012732128937248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (781349069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97668630 + ... + 97668637.

Almost surely, 2^781349068 is an apocalyptic number.

It is an amenable number.

781349068 is a deficient number, since it is larger than the sum of its proper divisors (586011808).

781349068 is a wasteful number, since it uses less digits than its factorization.

781349068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195337271 (or 195337269 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 781349068 is about 27952.6218448288. The cubic root of 781349068 is about 921.0468031088.

The spelling of 781349068 in words is "seven hundred eighty-one million, three hundred forty-nine thousand, sixty-eight".