704521057 has 2 divisors, whose sum is σ = 704521058. Its totient is φ = 704521056.

The previous prime is 704521043. The next prime is 704521091. The reversal of 704521057 is 750125407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 676208016 + 28313041 = 26004^2 + 5321^2 .

It is an emirp because it is prime and its reverse (750125407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 704521057 - 2²³ = 696132449 is a prime.

It is not a weakly prime, because it can be changed into another prime (704525057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352260528 + 352260529.

It is an arithmetic number, because the mean of its divisors is an integer number (352260529).

Almost surely, 2^704521057 is an apocalyptic number.

It is an amenable number.

704521057 is a deficient number, since it is larger than the sum of its proper divisors (1).

704521057 is an equidigital number, since it uses as much as digits as its factorization.

704521057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 704521057 is about 26542.8155439471. The cubic root of 704521057 is about 889.8114556626.

The spelling of 704521057 in words is "seven hundred four million, five hundred twenty-one thousand, fifty-seven".