690241536 has 180 divisors, whose sum is σ = 2071922944. Its totient is φ = 221184000.

The previous prime is 690241507. The next prime is 690241537. The reversal of 690241536 is 635142096.

It is a happy number.

It is a super-3 number, since 3×690241536³ (a number of 27 digits) contains 333 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 690241536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690241537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4571061 + ... + 4571211.

Almost surely, 2^690241536 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 690241536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1035961472).

690241536 is an abundant number, since it is smaller than the sum of its proper divisors (1381681408).

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

690241536 is a wasteful number, since it uses less digits than its factorization.

690241536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 690241536 is about 26272.4482300375. The cubic root of 690241536 is about 883.7586887319.

The spelling of 690241536 in words is "six hundred ninety million, two hundred forty-one thousand, five hundred thirty-six".