712900609 has 4 divisors (see below), whose sum is σ = 712954116. Its totient is φ = 712847104.

The previous prime is 712900603. The next prime is 712900613. The reversal of 712900609 is 906009217.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 906009217 = 5881 ⋅154057.

It can be written as a sum of positive squares in 2 ways, for example, as 281299984 + 431600625 = 16772^2 + 20775^2 .

It is a cyclic number.

It is not a de Polignac number, because 712900609 - 2¹³ = 712892417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712900603) 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, 10857 + ... + 39289.

It is an arithmetic number, because the mean of its divisors is an integer number (178238529).

It is a Proth number, since it is equal to 5439 ⋅ 2¹⁷ + 1 and 5439 < 2¹⁷.

Almost surely, 2^712900609 is an apocalyptic number.

It is an amenable number.

712900609 is a deficient number, since it is larger than the sum of its proper divisors (53507).

712900609 is a wasteful number, since it uses less digits than its factorization.

712900609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53506.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 712900609 is about 26700.1986696729. The cubic root of 712900609 is about 893.3253576396.

The spelling of 712900609 in words is "seven hundred twelve million, nine hundred thousand, six hundred nine".