709732057 has 2 divisors, whose sum is σ = 709732058. Its totient is φ = 709732056.

The previous prime is 709732019. The next prime is 709732069. The reversal of 709732057 is 750237907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670343881 + 39388176 = 25891^2 + 6276^2 .

It is an emirp because it is prime and its reverse (750237907) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-709732057 is a prime.

It is not a weakly prime, because it can be changed into another prime (709432057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354866028 + 354866029.

It is an arithmetic number, because the mean of its divisors is an integer number (354866029).

Almost surely, 2^709732057 is an apocalyptic number.

It is an amenable number.

709732057 is a deficient number, since it is larger than the sum of its proper divisors (1).

709732057 is an equidigital number, since it uses as much as digits as its factorization.

709732057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 709732057 is about 26640.7968536979. The cubic root of 709732057 is about 891.9999032255. Note that the first 4 decimals are identical.

The spelling of 709732057 in words is "seven hundred nine million, seven hundred thirty-two thousand, fifty-seven".