670506049 has 2 divisors, whose sum is σ = 670506050. Its totient is φ = 670506048.

The previous prime is 670506047. The next prime is 670506079. The reversal of 670506049 is 940605076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442345024 + 228161025 = 21032^2 + 15105^2 .

It is a cyclic number.

It is not a de Polignac number, because 670506049 - 2¹ = 670506047 is a prime.

Together with 670506047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 670505999 and 670506017.

It is not a weakly prime, because it can be changed into another prime (670506041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335253024 + 335253025.

It is an arithmetic number, because the mean of its divisors is an integer number (335253025).

Almost surely, 2^670506049 is an apocalyptic number.

It is an amenable number.

670506049 is a deficient number, since it is larger than the sum of its proper divisors (1).

670506049 is an equidigital number, since it uses as much as digits as its factorization.

670506049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 670506049 is about 25894.1315552385. The cubic root of 670506049 is about 875.2542603675.

The spelling of 670506049 in words is "six hundred seventy million, five hundred six thousand, forty-nine".