670540501 has 2 divisors, whose sum is σ = 670540502. Its totient is φ = 670540500.

The previous prime is 670540463. The next prime is 670540511. The reversal of 670540501 is 105045076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646481476 + 24059025 = 25426^2 + 4905^2 .

It is a cyclic number.

It is not a de Polignac number, because 670540501 - 2⁷ = 670540373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670540501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670540511) 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, 335270250 + 335270251.

It is an arithmetic number, because the mean of its divisors is an integer number (335270251).

Almost surely, 2^670540501 is an apocalyptic number.

It is an amenable number.

670540501 is a deficient number, since it is larger than the sum of its proper divisors (1).

670540501 is an equidigital number, since it uses as much as digits as its factorization.

670540501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 670540501 is about 25894.7967939507. The cubic root of 670540501 is about 875.2692509076.

Adding to 670540501 its reverse (105045076), we get a palindrome (775585577).

The spelling of 670540501 in words is "six hundred seventy million, five hundred forty thousand, five hundred one".