693126720 has 840 divisors, whose sum is σ = 3090242232. Its totient is φ = 145981440.

The previous prime is 693126701. The next prime is 693126727. The reversal of 693126720 is 27621396.

It can be written as a sum of positive squares in 4 ways, for example, as 50808384 + 642318336 = 7128^2 + 25344^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693126727) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 40772152 + ... + 40772168.

Almost surely, 2^693126720 is an apocalyptic number.

693126720 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 693126720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545121116).

693126720 is an abundant number, since it is smaller than the sum of its proper divisors (2397115512).

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

693126720 is a wasteful number, since it uses less digits than its factorization.

693126720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 693126720 is about 26327.2998995339. The cubic root of 693126720 is about 884.9883365311.

The spelling of 693126720 in words is "six hundred ninety-three million, one hundred twenty-six thousand, seven hundred twenty".