774428667 has 8 divisors (see below), whose sum is σ = 1056585024. Its totient is φ = 504279048.

The previous prime is 774428621. The next prime is 774428671. The reversal of 774428667 is 766824477.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 774428667 - 2¹² = 774424571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (774428617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3001533 + ... + 3001790.

It is an arithmetic number, because the mean of its divisors is an integer number (132073128).

Almost surely, 2^774428667 is an apocalyptic number.

774428667 is a deficient number, since it is larger than the sum of its proper divisors (282156357).

774428667 is a wasteful number, since it uses less digits than its factorization.

774428667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003369.

The product of its digits is 3161088, while the sum is 51.

The square root of 774428667 is about 27828.5584786564. The cubic root of 774428667 is about 918.3195011401.

The spelling of 774428667 in words is "seven hundred seventy-four million, four hundred twenty-eight thousand, six hundred sixty-seven".