690428050 has 24 divisors (see below), whose sum is σ = 1382981796. Its totient is φ = 254927040.

The previous prime is 690428047. The next prime is 690428059. The reversal of 690428050 is 50824096.

It is a happy number.

690428050 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 121462441 + 568965609 = 11021^2 + 23853^2 .

It is a junction number, because it is equal to n+sod(n) for n = 690427997 and 690428015.

It is not an unprimeable number, because it can be changed into a prime (690428059) 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, 530449 + ... + 531748.

Almost surely, 2^690428050 is an apocalyptic number.

690428050 is an abundant number, since it is smaller than the sum of its proper divisors (692553746).

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

690428050 is a wasteful number, since it uses less digits than its factorization.

690428050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062222 (or 1062217 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 690428050 is about 26275.9976023747. The cubic root of 690428050 is about 883.8382833448.

The spelling of 690428050 in words is "six hundred ninety million, four hundred twenty-eight thousand, fifty".