670450877 has 2 divisors, whose sum is σ = 670450878. Its totient is φ = 670450876.

The previous prime is 670450873. The next prime is 670450903. The reversal of 670450877 is 778054076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602898916 + 67551961 = 24554^2 + 8219^2 .

It is a cyclic number.

It is not a de Polignac number, because 670450877 - 2² = 670450873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670450871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335225438 + 335225439.

It is an arithmetic number, because the mean of its divisors is an integer number (335225439).

Almost surely, 2^670450877 is an apocalyptic number.

It is an amenable number.

670450877 is a deficient number, since it is larger than the sum of its proper divisors (1).

670450877 is an equidigital number, since it uses as much as digits as its factorization.

670450877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 670450877 is about 25893.0661954122. The cubic root of 670450877 is about 875.2302532003.

The spelling of 670450877 in words is "six hundred seventy million, four hundred fifty thousand, eight hundred seventy-seven".