774649 has 4 divisors (see below), whose sum is σ = 815440. Its totient is φ = 733860.

The previous prime is 774643. The next prime is 774661. The reversal of 774649 is 946477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 946477 = 7 ⋅135211.

It is a cyclic number.

It is not a de Polignac number, because 774649 - 2¹³ = 766457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20367 + ... + 20404.

It is an arithmetic number, because the mean of its divisors is an integer number (203860).

2⁷⁷⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

774649 is a deficient number, since it is larger than the sum of its proper divisors (40791).

774649 is a wasteful number, since it uses less digits than its factorization.

774649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40790.

The product of its digits is 42336, while the sum is 37.

The square root of 774649 is about 880.1414659019. The cubic root of 774649 is about 91.8406583361.

The spelling of 774649 in words is "seven hundred seventy-four thousand, six hundred forty-nine".