693072640 has 72 divisors (see below), whose sum is σ = 1787870448. Its totient is φ = 255897600.

The previous prime is 693072619. The next prime is 693072647. The reversal of 693072640 is 46270396.

It is a self number, because there is not a number n which added to its sum of digits gives 693072640.

It is not an unprimeable number, because it can be changed into a prime (693072647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4186 + ... + 37465.

It is an arithmetic number, because the mean of its divisors is an integer number (24831534).

Almost surely, 2^693072640 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 693072640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893935224).

693072640 is an abundant number, since it is smaller than the sum of its proper divisors (1094797808).

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

693072640 is a wasteful number, since it uses less digits than its factorization.

693072640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41685 (or 41671 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 693072640 is about 26326.2728087361. The cubic root of 693072640 is about 884.9653193768.

The spelling of 693072640 in words is "six hundred ninety-three million, seventy-two thousand, six hundred forty".