747009 has 16 divisors (see below), whose sum is σ = 1124800. Its totient is φ = 489888.

The previous prime is 746989. The next prime is 747037. The reversal of 747009 is 900747.

747009 = T₁₀₅ + T₁₀₆ + ... + T₁₇₇.

It is not a de Polignac number, because 747009 - 2⁹ = 746497 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (747049) 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, 1782 + ... + 2160.

It is an arithmetic number, because the mean of its divisors is an integer number (70300).

2⁷⁴⁷⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

747009 is a deficient number, since it is larger than the sum of its proper divisors (377791).

747009 is a wasteful number, since it uses less digits than its factorization.

747009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 455 counting only the distinct ones).

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

The square root of 747009 is about 864.2968240136. The cubic root of 747009 is about 90.7350907821.

The spelling of 747009 in words is "seven hundred forty-seven thousand, nine".