690364327681 has 8 divisors (see below), whose sum is σ = 789258305600. Its totient is φ = 591537975408.

The previous prime is 690364327657. The next prime is 690364327727. The reversal of 690364327681 is 186723463096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690364327681 - 2¹⁵ = 690364294913 is a prime.

It is a super-2 number, since 2×690364327681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690364324681) 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 in 7 ways as a sum of consecutive naturals, for example, 16884531 + ... + 16925368.

It is an arithmetic number, because the mean of its divisors is an integer number (98657288200).

Almost surely, 2^690364327681 is an apocalyptic number.

It is an amenable number.

690364327681 is a deficient number, since it is larger than the sum of its proper divisors (98893977919).

690364327681 is a wasteful number, since it uses less digits than its factorization.

690364327681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33812823.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 690364327681 in words is "six hundred ninety billion, three hundred sixty-four million, three hundred twenty-seven thousand, six hundred eighty-one".