697890816 has 240 divisors, whose sum is σ = 2386303920. Its totient is φ = 199065600.

The previous prime is 697890799. The next prime is 697890839. The reversal of 697890816 is 618098796.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1160916 + ... + 1161516.

It is an arithmetic number, because the mean of its divisors is an integer number (9942933).

Almost surely, 2^697890816 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 697890816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1193151960).

697890816 is an abundant number, since it is smaller than the sum of its proper divisors (1688413104).

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

697890816 is an equidigital number, since it uses as much as digits as its factorization.

697890816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 697890816 is about 26417.6232087597. The cubic root of 697890816 is about 887.0113174511.

The spelling of 697890816 in words is "six hundred ninety-seven million, eight hundred ninety thousand, eight hundred sixteen".