774130721 has 16 divisors (see below), whose sum is σ = 953866368. Its totient is φ = 611798400.

The previous prime is 774130703. The next prime is 774130771. The reversal of 774130721 is 127031477.

It is a cyclic number.

It is not a de Polignac number, because 774130721 - 2⁶ = 774130657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (774130771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83981 + ... + 92741.

It is an arithmetic number, because the mean of its divisors is an integer number (59616648).

Almost surely, 2^774130721 is an apocalyptic number.

It is an amenable number.

774130721 is a deficient number, since it is larger than the sum of its proper divisors (179735647).

774130721 is a wasteful number, since it uses less digits than its factorization.

774130721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9752.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 774130721 is about 27823.2047219583. The cubic root of 774130721 is about 918.2017176567.

The spelling of 774130721 in words is "seven hundred seventy-four million, one hundred thirty thousand, seven hundred twenty-one".