774168421 has 8 divisors (see below), whose sum is σ = 834541400. Its totient is φ = 713912832.

The previous prime is 774168419. The next prime is 774168463. The reversal of 774168421 is 124861477.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 444745921 + 329422500 = 21089^2 + 18150^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 774168421 - 2¹ = 774168419 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 (774168481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15396 + ... + 42253.

It is an arithmetic number, because the mean of its divisors is an integer number (104317675).

Almost surely, 2^774168421 is an apocalyptic number.

It is an amenable number.

774168421 is a deficient number, since it is larger than the sum of its proper divisors (60372979).

774168421 is a wasteful number, since it uses less digits than its factorization.

774168421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58695.

The product of its digits is 75264, while the sum is 40.

The square root of 774168421 is about 27823.8822057599. The cubic root of 774168421 is about 918.2166228236.

The spelling of 774168421 in words is "seven hundred seventy-four million, one hundred sixty-eight thousand, four hundred twenty-one".