690538752 has 216 divisors, whose sum is σ = 2115981504. Its totient is φ = 216133632.

The previous prime is 690538741. The next prime is 690538757. The reversal of 690538752 is 257835096.

It is a happy number.

690538752 is a `hidden beast` number, since 69 + 0 + 538 + 7 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 690538698 and 690538707.

It is not an unprimeable number, because it can be changed into a prime (690538757) 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, 4398258 + ... + 4398414.

Almost surely, 2^690538752 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 690538752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1057990752).

690538752 is an abundant number, since it is smaller than the sum of its proper divisors (1425442752).

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

690538752 is a wasteful number, since it uses less digits than its factorization.

690538752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 690538752 is about 26278.1040411975. The cubic root of 690538752 is about 883.8855185041.

The spelling of 690538752 in words is "six hundred ninety million, five hundred thirty-eight thousand, seven hundred fifty-two".