690231936 has 64 divisors (see below), whose sum is σ = 1858619520. Its totient is φ = 226916352.

The previous prime is 690231931. The next prime is 690231961. The reversal of 690231936 is 639132096.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 690231894 and 690231903.

It is not an unprimeable number, because it can be changed into a prime (690231931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15721 + ... + 40343.

It is an arithmetic number, because the mean of its divisors is an integer number (29040930).

Almost surely, 2^690231936 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 690231936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929309760).

690231936 is an abundant number, since it is smaller than the sum of its proper divisors (1168387584).

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

690231936 is a wasteful number, since it uses less digits than its factorization.

690231936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24713 (or 24701 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 690231936 is about 26272.2655284998. The cubic root of 690231936 is about 883.7545915561.

The spelling of 690231936 in words is "six hundred ninety million, two hundred thirty-one thousand, nine hundred thirty-six".