774141721 has 8 divisors (see below), whose sum is σ = 779309640. Its totient is φ = 768986112.

The previous prime is 774141707. The next prime is 774141727. The reversal of 774141721 is 127141477.

774141721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16516096 + 757625625 = 4064^2 + 27525^2 .

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

It is not a de Polignac number, because 774141721 - 2⁹ = 774141209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774141727) 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, 146595 + ... + 151783.

It is an arithmetic number, because the mean of its divisors is an integer number (97413705).

Almost surely, 2^774141721 is an apocalyptic number.

It is an amenable number.

774141721 is a deficient number, since it is larger than the sum of its proper divisors (5167919).

774141721 is a wasteful number, since it uses less digits than its factorization.

774141721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155.

The product of its digits is 10976, while the sum is 34.

The square root of 774141721 is about 27823.4023979815. The cubic root of 774141721 is about 918.2060666944.

The spelling of 774141721 in words is "seven hundred seventy-four million, one hundred forty-one thousand, seven hundred twenty-one".