743461657 has 2 divisors, whose sum is σ = 743461658. Its totient is φ = 743461656.

The previous prime is 743461613. The next prime is 743461721. The reversal of 743461657 is 756164347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 604127241 + 139334416 = 24579^2 + 11804^2 .

It is an emirp because it is prime and its reverse (756164347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 743461657 - 2¹⁹ = 742937369 is a prime.

It is not a weakly prime, because it can be changed into another prime (743461457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371730828 + 371730829.

It is an arithmetic number, because the mean of its divisors is an integer number (371730829).

Almost surely, 2^743461657 is an apocalyptic number.

It is an amenable number.

743461657 is a deficient number, since it is larger than the sum of its proper divisors (1).

743461657 is an equidigital number, since it uses as much as digits as its factorization.

743461657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 43.

The square root of 743461657 is about 27266.4933022199. The cubic root of 743461657 is about 905.9123739419.

It can be divided in two parts, 743 and 461657, that added together give a square (462400 = 680²).

The spelling of 743461657 in words is "seven hundred forty-three million, four hundred sixty-one thousand, six hundred fifty-seven".