690506208 has 240 divisors, whose sum is σ = 2444238720. Its totient is φ = 186810624.

The previous prime is 690506177. The next prime is 690506231. The reversal of 690506208 is 802605096.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 343735 + ... + 345737.

It is an arithmetic number, because the mean of its divisors is an integer number (10184328).

Almost surely, 2^690506208 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 690506208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222119360).

690506208 is an abundant number, since it is smaller than the sum of its proper divisors (1753732512).

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

690506208 is a wasteful number, since it uses less digits than its factorization.

690506208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 690506208 is about 26277.4848111458. The cubic root of 690506208 is about 883.8716329101.

The spelling of 690506208 in words is "six hundred ninety million, five hundred six thousand, two hundred eight".