690687819101 has 32 divisors (see below), whose sum is σ = 833765495040. Its totient is φ = 558928871424.

The previous prime is 690687819011. The next prime is 690687819137. The reversal of 690687819101 is 101918786096.

690687819101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690687819101 - 2³⁰ = 689614077277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690687819181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101077781 + ... + 101084613.

It is an arithmetic number, because the mean of its divisors is an integer number (26055171720).

Almost surely, 2^690687819101 is an apocalyptic number.

It is an amenable number.

690687819101 is a deficient number, since it is larger than the sum of its proper divisors (143077675939).

690687819101 is a wasteful number, since it uses less digits than its factorization.

690687819101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9365.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The spelling of 690687819101 in words is "six hundred ninety billion, six hundred eighty-seven million, eight hundred nineteen thousand, one hundred one".