712707749 has 4 divisors (see below), whose sum is σ = 767531436. Its totient is φ = 657884064.

The previous prime is 712707733. The next prime is 712707781. The reversal of 712707749 is 947707217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947707217 = 23593 ⋅40169.

It can be written as a sum of positive squares in 2 ways, for example, as 94439524 + 618268225 = 9718^2 + 24865^2 .

It is a cyclic number.

It is not a de Polignac number, because 712707749 - 2⁴ = 712707733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712700749) 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, 27411824 + ... + 27411849.

It is an arithmetic number, because the mean of its divisors is an integer number (191882859).

Almost surely, 2^712707749 is an apocalyptic number.

It is an amenable number.

712707749 is a deficient number, since it is larger than the sum of its proper divisors (54823687).

712707749 is a wasteful number, since it uses less digits than its factorization.

712707749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54823686.

The product of its (nonzero) digits is 172872, while the sum is 44.

The square root of 712707749 is about 26696.5868417669. The cubic root of 712707749 is about 893.2447936897.

The spelling of 712707749 in words is "seven hundred twelve million, seven hundred seven thousand, seven hundred forty-nine".