774749 has 4 divisors (see below), whose sum is σ = 785436. Its totient is φ = 764064.

The previous prime is 774733. The next prime is 774757. The reversal of 774749 is 947477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947477 = 859 ⋅1103.

It can be written as a sum of positive squares in 2 ways, for example, as 669124 + 105625 = 818^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 774749 - 2⁴ = 774733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5234 + ... + 5379.

It is an arithmetic number, because the mean of its divisors is an integer number (196359).

2⁷⁷⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

774749 is a deficient number, since it is larger than the sum of its proper divisors (10687).

774749 is a wasteful number, since it uses less digits than its factorization.

774749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686.

The product of its digits is 49392, while the sum is 38.

The square root of 774749 is about 880.1982731181. The cubic root of 774749 is about 91.8446100917.

The spelling of 774749 in words is "seven hundred seventy-four thousand, seven hundred forty-nine".