690960212 has 6 divisors (see below), whose sum is σ = 1209180378. Its totient is φ = 345480104.

The previous prime is 690960191. The next prime is 690960217. The reversal of 690960212 is 212069096.

It can be written as a sum of positive squares in only one way, i.e., 690848656 + 111556 = 26284^2 + 334^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690960217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86370023 + ... + 86370030.

It is an arithmetic number, because the mean of its divisors is an integer number (201530063).

Almost surely, 2^690960212 is an apocalyptic number.

It is an amenable number.

690960212 is a deficient number, since it is larger than the sum of its proper divisors (518220166).

690960212 is a wasteful number, since it uses less digits than its factorization.

690960212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172740057 (or 172740055 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 690960212 is about 26286.1220418684. The cubic root of 690960212 is about 884.0653040350.

The spelling of 690960212 in words is "six hundred ninety million, nine hundred sixty thousand, two hundred twelve".