690820617135 has 16 divisors (see below), whose sum is σ = 1205795986560. Its totient is φ = 334943329440.

The previous prime is 690820617073. The next prime is 690820617163. The reversal of 690820617135 is 531716028096.

It is not a de Polignac number, because 690820617135 - 2¹² = 690820613039 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2093395645 + ... + 2093395974.

It is an arithmetic number, because the mean of its divisors is an integer number (75362249160).

Almost surely, 2^690820617135 is an apocalyptic number.

690820617135 is a deficient number, since it is larger than the sum of its proper divisors (514975369425).

690820617135 is a wasteful number, since it uses less digits than its factorization.

690820617135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186791638.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 690820617135 in words is "six hundred ninety billion, eight hundred twenty million, six hundred seventeen thousand, one hundred thirty-five".