670216087 has 2 divisors, whose sum is σ = 670216088. Its totient is φ = 670216086.

The previous prime is 670216069. The next prime is 670216093. The reversal of 670216087 is 780612076.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670216087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670214087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335108043 + 335108044.

It is an arithmetic number, because the mean of its divisors is an integer number (335108044).

Almost surely, 2^670216087 is an apocalyptic number.

670216087 is a deficient number, since it is larger than the sum of its proper divisors (1).

670216087 is an equidigital number, since it uses as much as digits as its factorization.

670216087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 670216087 is about 25888.5319591513. The cubic root of 670216087 is about 875.1280735523.

The spelling of 670216087 in words is "six hundred seventy million, two hundred sixteen thousand, eighty-seven".