670707487 has 2 divisors, whose sum is σ = 670707488. Its totient is φ = 670707486.

The previous prime is 670707431. The next prime is 670707491. The reversal of 670707487 is 784707076.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670707487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670707497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335353743 + 335353744.

It is an arithmetic number, because the mean of its divisors is an integer number (335353744).

Almost surely, 2^670707487 is an apocalyptic number.

670707487 is a deficient number, since it is larger than the sum of its proper divisors (1).

670707487 is an equidigital number, since it uses as much as digits as its factorization.

670707487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460992, while the sum is 46.

The square root of 670707487 is about 25898.0209089421. The cubic root of 670707487 is about 875.3419015429.

The spelling of 670707487 in words is "six hundred seventy million, seven hundred seven thousand, four hundred eighty-seven".