774009 has 16 divisors (see below), whose sum is σ = 1161600. Its totient is φ = 509328.

The previous prime is 774001. The next prime is 774017. The reversal of 774009 is 900477.

It is an interprime number because it is at equal distance from previous prime (774001) and next prime (774017).

It is not a de Polignac number, because 774009 - 2³ = 774001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2812 + ... + 3074.

It is an arithmetic number, because the mean of its divisors is an integer number (72600).

2⁷⁷⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

774009 is a deficient number, since it is larger than the sum of its proper divisors (387591).

774009 is a wasteful number, since it uses less digits than its factorization.

774009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 774009 is about 879.7778128596. Note that the first 3 decimals coincide. The cubic root of 774009 is about 91.8153590432.

The spelling of 774009 in words is "seven hundred seventy-four thousand, nine".