690956400911 has 12 divisors (see below), whose sum is σ = 803808645192. Its totient is φ = 592216633008.

The previous prime is 690956400857. The next prime is 690956400917. The reversal of 690956400911 is 119004659096.

It is not a de Polignac number, because 690956400911 - 2³⁰ = 689882659087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690956400911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690956400917) 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 11 ways as a sum of consecutive naturals, for example, 571061 + ... + 1306913.

It is an arithmetic number, because the mean of its divisors is an integer number (66984053766).

Almost surely, 2^690956400911 is an apocalyptic number.

690956400911 is a deficient number, since it is larger than the sum of its proper divisors (112852244281).

690956400911 is a wasteful number, since it uses less digits than its factorization.

690956400911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755030 (or 755023 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 50.

The spelling of 690956400911 in words is "six hundred ninety billion, nine hundred fifty-six million, four hundred thousand, nine hundred eleven".