690205505066 has 48 divisors (see below), whose sum is σ = 1313927479872. Its totient is φ = 268889947200.

The previous prime is 690205505053. The next prime is 690205505071. The reversal of 690205505066 is 660505502096.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25762670 + ... + 25789446.

It is an arithmetic number, because the mean of its divisors is an integer number (27373489164).

Almost surely, 2^690205505066 is an apocalyptic number.

690205505066 is a deficient number, since it is larger than the sum of its proper divisors (623721974806).

690205505066 is a wasteful number, since it uses less digits than its factorization.

690205505066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50715 (or 50708 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 690205505066 in words is "six hundred ninety billion, two hundred five million, five hundred five thousand, sixty-six".