712256749 has 2 divisors, whose sum is σ = 712256750. Its totient is φ = 712256748.

The previous prime is 712256707. The next prime is 712256759. The reversal of 712256749 is 947652217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697488100 + 14768649 = 26410^2 + 3843^2 .

It is an emirp because it is prime and its reverse (947652217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 712256749 - 2¹¹ = 712254701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712256759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356128374 + 356128375.

It is an arithmetic number, because the mean of its divisors is an integer number (356128375).

Almost surely, 2^712256749 is an apocalyptic number.

It is an amenable number.

712256749 is a deficient number, since it is larger than the sum of its proper divisors (1).

712256749 is an equidigital number, since it uses as much as digits as its factorization.

712256749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 712256749 is about 26688.1387324032. The cubic root of 712256749 is about 893.0563394425.

The spelling of 712256749 in words is "seven hundred twelve million, two hundred fifty-six thousand, seven hundred forty-nine".