774454661 has 4 divisors (see below), whose sum is σ = 774517824. Its totient is φ = 774391500.

The previous prime is 774454627. The next prime is 774454663. The reversal of 774454661 is 166454477.

774454661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 166454477 = 7 ⋅23779211.

It is a cyclic number.

It is not a de Polignac number, because 774454661 - 2¹⁰ = 774453637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774454663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6605 + ... + 39906.

It is an arithmetic number, because the mean of its divisors is an integer number (193629456).

Almost surely, 2^774454661 is an apocalyptic number.

It is an amenable number.

774454661 is a deficient number, since it is larger than the sum of its proper divisors (63163).

774454661 is a wasteful number, since it uses less digits than its factorization.

774454661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63162.

The product of its digits is 564480, while the sum is 44.

The square root of 774454661 is about 27829.0255129424. The cubic root of 774454661 is about 918.3297756091.

The spelling of 774454661 in words is "seven hundred seventy-four million, four hundred fifty-four thousand, six hundred sixty-one".