774706531 has 2 divisors, whose sum is σ = 774706532. Its totient is φ = 774706530.

The previous prime is 774706511. The next prime is 774706547. The reversal of 774706531 is 135607477.

774706531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (135607477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 774706531 - 2²¹ = 772609379 is a prime.

It is a super-2 number, since 2×774706531² = 1200340418348107922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (774706501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387353265 + 387353266.

It is an arithmetic number, because the mean of its divisors is an integer number (387353266).

Almost surely, 2^774706531 is an apocalyptic number.

774706531 is a deficient number, since it is larger than the sum of its proper divisors (1).

774706531 is an equidigital number, since it uses as much as digits as its factorization.

774706531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 774706531 is about 27833.5504562390. The cubic root of 774706531 is about 918.4293186218.

The spelling of 774706531 in words is "seven hundred seventy-four million, seven hundred six thousand, five hundred thirty-one".