670703777 has 2 divisors, whose sum is σ = 670703778. Its totient is φ = 670703776.

The previous prime is 670703753. The next prime is 670703791. The reversal of 670703777 is 777307076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523906321 + 146797456 = 22889^2 + 12116^2 .

It is a cyclic number.

It is not a de Polignac number, because 670703777 - 2⁸ = 670703521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670703977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335351888 + 335351889.

It is an arithmetic number, because the mean of its divisors is an integer number (335351889).

Almost surely, 2^670703777 is an apocalyptic number.

It is an amenable number.

670703777 is a deficient number, since it is larger than the sum of its proper divisors (1).

670703777 is an equidigital number, since it uses as much as digits as its factorization.

670703777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302526, while the sum is 44.

The square root of 670703777 is about 25897.9492817482. The cubic root of 670703777 is about 875.3402875634.

The spelling of 670703777 in words is "six hundred seventy million, seven hundred three thousand, seven hundred seventy-seven".