697181212 has 72 divisors (see below), whose sum is σ = 1608991440. Its totient is φ = 261273600.

The previous prime is 697181201. The next prime is 697181213. The reversal of 697181212 is 212181796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697181213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41212 + ... + 55612.

Almost surely, 2^697181212 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 697181212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804495720).

697181212 is an abundant number, since it is smaller than the sum of its proper divisors (911810228).

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

697181212 is a wasteful number, since it uses less digits than its factorization.

697181212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14451 (or 14442 counting only the distinct ones).

The product of its digits is 12096, while the sum is 37.

The square root of 697181212 is about 26404.1892888231. The cubic root of 697181212 is about 886.7105826202.

The spelling of 697181212 in words is "six hundred ninety-seven million, one hundred eighty-one thousand, two hundred twelve".