774103921 has 2 divisors, whose sum is σ = 774103922. Its totient is φ = 774103920.

The previous prime is 774103879. The next prime is 774103963. The reversal of 774103921 is 129301477.

It is a balanced prime because it is at equal distance from previous prime (774103879) and next prime (774103963).

It can be written as a sum of positive squares in only one way, i.e., 410629696 + 363474225 = 20264^2 + 19065^2 .

It is an emirp because it is prime and its reverse (129301477) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774103921 is a prime.

It is not a weakly prime, because it can be changed into another prime (774103991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387051960 + 387051961.

It is an arithmetic number, because the mean of its divisors is an integer number (387051961).

Almost surely, 2^774103921 is an apocalyptic number.

It is an amenable number.

774103921 is a deficient number, since it is larger than the sum of its proper divisors (1).

774103921 is an equidigital number, since it uses as much as digits as its factorization.

774103921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 774103921 is about 27822.7231054043. The cubic root of 774103921 is about 918.1911216469.

The spelling of 774103921 in words is "seven hundred seventy-four million, one hundred three thousand, nine hundred twenty-one".