670740481 has 2 divisors, whose sum is σ = 670740482. Its totient is φ = 670740480.

The previous prime is 670740439. The next prime is 670740487. The reversal of 670740481 is 184047076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441672256 + 229068225 = 21016^2 + 15135^2 .

It is a cyclic number.

It is not a de Polignac number, because 670740481 - 2¹¹ = 670738433 is a prime.

It is a super-2 number, since 2×670740481² = 899785585704222722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 670740481.

It is not a weakly prime, because it can be changed into another prime (670740487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335370240 + 335370241.

It is an arithmetic number, because the mean of its divisors is an integer number (335370241).

Almost surely, 2^670740481 is an apocalyptic number.

It is an amenable number.

670740481 is a deficient number, since it is larger than the sum of its proper divisors (1).

670740481 is an equidigital number, since it uses as much as digits as its factorization.

670740481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 670740481 is about 25898.6578995901. The cubic root of 670740481 is about 875.3562548229.

The spelling of 670740481 in words is "six hundred seventy million, seven hundred forty thousand, four hundred eighty-one".