690284448 has 144 divisors (see below), whose sum is σ = 2320980480. Its totient is φ = 190407168.

The previous prime is 690284447. The next prime is 690284503. The reversal of 690284448 is 844482096.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×690284448³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (690284443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52561 + ... + 64367.

It is an arithmetic number, because the mean of its divisors is an integer number (16117920).

Almost surely, 2^690284448 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 690284448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160490240).

690284448 is an abundant number, since it is smaller than the sum of its proper divisors (1630696032).

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

690284448 is a wasteful number, since it uses less digits than its factorization.

690284448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11859 (or 11848 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 690284448 is about 26273.2648903786. The cubic root of 690284448 is about 883.7770026433. Note that the first 3 decimals are identical.

The spelling of 690284448 in words is "six hundred ninety million, two hundred eighty-four thousand, four hundred forty-eight".