774661 has 2 divisors, whose sum is σ = 774662. Its totient is φ = 774660.

The previous prime is 774643. The next prime is 774667. The reversal of 774661 is 166477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 690561 + 84100 = 831^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 774661 - 2⁵ = 774629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387330 + 387331.

It is an arithmetic number, because the mean of its divisors is an integer number (387331).

2⁷⁷⁴⁶⁶¹ is an apocalyptic number.

It is an amenable number.

774661 is a deficient number, since it is larger than the sum of its proper divisors (1).

774661 is an equidigital number, since it uses as much as digits as its factorization.

774661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 774661 is about 880.1482829615. The cubic root of 774661 is about 91.8411325647.

The spelling of 774661 in words is "seven hundred seventy-four thousand, six hundred sixty-one".