690370212 has 36 divisors (see below), whose sum is σ = 1873863600. Its totient is φ = 197248464.

The previous prime is 690370207. The next prime is 690370237. The reversal of 690370212 is 212073096.

It is a super-2 number, since 2×690370212² = 953222059233849888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 690370212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586462 + ... + 587637.

Almost surely, 2^690370212 is an apocalyptic number.

It is an amenable number.

690370212 is an abundant number, since it is smaller than the sum of its proper divisors (1183493388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690370212 is a wasteful number, since it uses less digits than its factorization.

690370212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174120 (or 1174111 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 690370212 is about 26274.8969931378. The cubic root of 690370212 is about 883.8136025852.

The spelling of 690370212 in words is "six hundred ninety million, three hundred seventy thousand, two hundred twelve".