774142568 has 8 divisors (see below), whose sum is σ = 1451517330. Its totient is φ = 387071280.

The previous prime is 774142561. The next prime is 774142573. The reversal of 774142568 is 865241477.

It can be written as a sum of positive squares in only one way, i.e., 622901764 + 151240804 = 24958^2 + 12298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (774142561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48383903 + ... + 48383918.

Almost surely, 2^774142568 is an apocalyptic number.

It is an amenable number.

774142568 is a deficient number, since it is larger than the sum of its proper divisors (677374762).

774142568 is a wasteful number, since it uses less digits than its factorization.

774142568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96767827 (or 96767823 counting only the distinct ones).

The product of its digits is 376320, while the sum is 44.

The square root of 774142568 is about 27823.4176189770. The cubic root of 774142568 is about 918.2064015686.

The spelling of 774142568 in words is "seven hundred seventy-four million, one hundred forty-two thousand, five hundred sixty-eight".