690013212 has 96 divisors (see below), whose sum is σ = 1880546304. Its totient is φ = 192844800.

The previous prime is 690013169. The next prime is 690013237. The reversal of 690013212 is 212310096.

It is a super-2 number, since 2×690013212² = 952236465469113888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1593348 + ... + 1593780.

It is an arithmetic number, because the mean of its divisors is an integer number (19589024).

Almost surely, 2^690013212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690013212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940273152).

690013212 is an abundant number, since it is smaller than the sum of its proper divisors (1190533092).

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

690013212 is a wasteful number, since it uses less digits than its factorization.

690013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 690013212 is about 26268.1025580456. The cubic root of 690013212 is about 883.6612322322.

The spelling of 690013212 in words is "six hundred ninety million, thirteen thousand, two hundred twelve".