696731040 has 144 divisors (see below), whose sum is σ = 2435791176. Its totient is φ = 181248000.

The previous prime is 696731029. The next prime is 696731047. The reversal of 696731040 is 40137696.

It can be written as a sum of positive squares in 4 ways, for example, as 386830224 + 309900816 = 19668^2 + 17604^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a junction number, because it is equal to n+sod(n) for n = 696730986 and 696731004.

It is not an unprimeable number, because it can be changed into a prime (696731047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53140 + ... + 64940.

Almost surely, 2^696731040 is an apocalyptic number.

696731040 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 696731040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217895588).

696731040 is an abundant number, since it is smaller than the sum of its proper divisors (1739060136).

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

696731040 is a wasteful number, since it uses less digits than its factorization.

696731040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11863 (or 11852 counting only the distinct ones).

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

The square root of 696731040 is about 26395.6632801678. The cubic root of 696731040 is about 886.5196909668.

The spelling of 696731040 in words is "six hundred ninety-six million, seven hundred thirty-one thousand, forty".