696991996800 has 1536 divisors, whose sum is σ = 2947611340800. Its totient is φ = 159252480000.

The previous prime is 696991996783. The next prime is 696991996807. The reversal of 696991996800 is 8699199696.

696991996800 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696991996807) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1207958112 + ... + 1207958688.

It is an arithmetic number, because the mean of its divisors is an integer number (1919017800).

Almost surely, 2^696991996800 is an apocalyptic number.

696991996800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 696991996800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473805670400).

696991996800 is an abundant number, since it is smaller than the sum of its proper divisors (2250619344000).

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

696991996800 is a wasteful number, since it uses less digits than its factorization.

696991996800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 102036672, while the sum is 72.

The spelling of 696991996800 in words is "six hundred ninety-six billion, nine hundred ninety-one million, nine hundred ninety-six thousand, eight hundred".