697811620 has 96 divisors (see below), whose sum is σ = 1634048640. Its totient is φ = 248202240.

The previous prime is 697811617. The next prime is 697811629. The reversal of 697811620 is 26118796.

697811620 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (697811629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3073947 + ... + 3074173.

It is an arithmetic number, because the mean of its divisors is an integer number (17021340).

Almost surely, 2^697811620 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 697811620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817024320).

697811620 is an abundant number, since it is smaller than the sum of its proper divisors (936237020).

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

697811620 is a wasteful number, since it uses less digits than its factorization.

697811620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 697811620 is about 26416.1242425909. The cubic root of 697811620 is about 886.9777637758.

The spelling of 697811620 in words is "six hundred ninety-seven million, eight hundred eleven thousand, six hundred twenty".