1690000777 has 2 divisors, whose sum is σ = 1690000778. Its totient is φ = 1690000776.

The previous prime is 1690000769. The next prime is 1690000783. The reversal of 1690000777 is 7770000961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1449781776 + 240219001 = 38076^2 + 15499^2 .

It is a cyclic number.

It is not a de Polignac number, because 1690000777 - 2³ = 1690000769 is a prime.

It is a super-2 number, since 2×1690000777² = 5712205252521207458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1690000727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845000388 + 845000389.

It is an arithmetic number, because the mean of its divisors is an integer number (845000389).

Almost surely, 2^1690000777 is an apocalyptic number.

It is an amenable number.

1690000777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690000777 is an equidigital number, since it uses as much as digits as its factorization.

1690000777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 1690000777 is about 41109.6190325330. The cubic root of 1690000777 is about 1191.1386077437.

The spelling of 1690000777 in words is "one billion, six hundred ninety million, seven hundred seventy-seven", and thus it is an aban number.