690266304 has 252 divisors, whose sum is σ = 2450902896. Its totient is φ = 181868544.

The previous prime is 690266293. The next prime is 690266327. The reversal of 690266304 is 403662096.

690266304 is a `hidden beast` number, since 6 + 90 + 266 + 304 = 666.

It is a tau number, because it is divible by the number of its divisors (252).

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 680902 + ... + 681914.

Almost surely, 2^690266304 is an apocalyptic number.

690266304 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690266304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225451448).

690266304 is an abundant number, since it is smaller than the sum of its proper divisors (1760636592).

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

690266304 is a wasteful number, since it uses less digits than its factorization.

690266304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 690266304 is about 26272.9195941372. The cubic root of 690266304 is about 883.7692592700.

The spelling of 690266304 in words is "six hundred ninety million, two hundred sixty-six thousand, three hundred four".