690865140019 has 2 divisors, whose sum is σ = 690865140020. Its totient is φ = 690865140018.

The previous prime is 690865140001. The next prime is 690865140037. The reversal of 690865140019 is 910041568096.

It is a balanced prime because it is at equal distance from previous prime (690865140001) and next prime (690865140037).

It is a cyclic number.

It is not a de Polignac number, because 690865140019 - 2³¹ = 688717656371 is a prime.

It is a super-2 number, since 2×690865140019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (690865144019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345432570009 + 345432570010.

It is an arithmetic number, because the mean of its divisors is an integer number (345432570010).

Almost surely, 2^690865140019 is an apocalyptic number.

690865140019 is a deficient number, since it is larger than the sum of its proper divisors (1).

690865140019 is an equidigital number, since it uses as much as digits as its factorization.

690865140019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 690865140019 in words is "six hundred ninety billion, eight hundred sixty-five million, one hundred forty thousand, nineteen".