670338623 has 2 divisors, whose sum is σ = 670338624. Its totient is φ = 670338622.

The previous prime is 670338587. The next prime is 670338649. The reversal of 670338623 is 326833076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670338623 - 2¹² = 670334527 is a prime.

It is a super-2 number, since 2×670338623² = 898707738971072258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670338023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335169311 + 335169312.

It is an arithmetic number, because the mean of its divisors is an integer number (335169312).

Almost surely, 2^670338623 is an apocalyptic number.

670338623 is a deficient number, since it is larger than the sum of its proper divisors (1).

670338623 is an equidigital number, since it uses as much as digits as its factorization.

670338623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 670338623 is about 25890.8984587248. The cubic root of 670338623 is about 875.1814036952.

The spelling of 670338623 in words is "six hundred seventy million, three hundred thirty-eight thousand, six hundred twenty-three".