697860020 has 144 divisors (see below), whose sum is σ = 1814182272. Its totient is φ = 221886720.

The previous prime is 697860019. The next prime is 697860067. The reversal of 697860020 is 20068796.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6775289 + ... + 6775391.

It is an arithmetic number, because the mean of its divisors is an integer number (12598488).

Almost surely, 2^697860020 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 697860020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907091136).

697860020 is an abundant number, since it is smaller than the sum of its proper divisors (1116322252).

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

697860020 is a wasteful number, since it uses less digits than its factorization.

697860020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 697860020 is about 26417.0403338451. The cubic root of 697860020 is about 886.9982701369.

The spelling of 697860020 in words is "six hundred ninety-seven million, eight hundred sixty thousand, twenty".