690894468 has 96 divisors (see below), whose sum is σ = 1981808640. Its totient is φ = 206388000.

The previous prime is 690894437. The next prime is 690894469. The reversal of 690894468 is 864498096.

690894468 is a `hidden beast` number, since 6 + 90 + 8 + 94 + 468 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (690894469) 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 31 ways as a sum of consecutive naturals, for example, 80253 + ... + 88443.

It is an arithmetic number, because the mean of its divisors is an integer number (20643840).

Almost surely, 2^690894468 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 690894468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990904320).

690894468 is an abundant number, since it is smaller than the sum of its proper divisors (1290914172).

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

690894468 is a wasteful number, since it uses less digits than its factorization.

690894468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8286 (or 8278 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 690894468 is about 26284.8714663017. The cubic root of 690894468 is about 884.0372639097.

The spelling of 690894468 in words is "six hundred ninety million, eight hundred ninety-four thousand, four hundred sixty-eight".