693920816 has 40 divisors (see below), whose sum is σ = 1393251600. Its totient is φ = 334414080.

The previous prime is 693920813. The next prime is 693920827. The reversal of 693920816 is 618029396.

It is not an unprimeable number, because it can be changed into a prime (693920813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397706 + ... + 399446.

It is an arithmetic number, because the mean of its divisors is an integer number (34831290).

Almost surely, 2^693920816 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 693920816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696625800).

693920816 is an abundant number, since it is smaller than the sum of its proper divisors (699330784).

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

693920816 is a wasteful number, since it uses less digits than its factorization.

693920816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637 (or 2631 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 693920816 is about 26342.3768099995. The cubic root of 693920816 is about 885.3261763849.

The spelling of 693920816 in words is "six hundred ninety-three million, nine hundred twenty thousand, eight hundred sixteen".