774684221 has 8 divisors (see below), whose sum is σ = 818449920. Its totient is φ = 732055408.

The previous prime is 774684193. The next prime is 774684263. The reversal of 774684221 is 122486477.

It is a happy number.

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 774684221 - 2²⁶ = 707575357 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 (774684821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282821 + ... + 285546.

It is an arithmetic number, because the mean of its divisors is an integer number (102306240).

Almost surely, 2^774684221 is an apocalyptic number.

It is an amenable number.

774684221 is a deficient number, since it is larger than the sum of its proper divisors (43765699).

774684221 is a wasteful number, since it uses less digits than its factorization.

774684221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568443.

The product of its digits is 150528, while the sum is 41.

The square root of 774684221 is about 27833.1496780368. The cubic root of 774684221 is about 918.4205022275.

The spelling of 774684221 in words is "seven hundred seventy-four million, six hundred eighty-four thousand, two hundred twenty-one".