68698404 has 18 divisors (see below), whose sum is σ = 173654390. Its totient is φ = 22899456.

The previous prime is 68698403. The next prime is 68698423. The reversal of 68698404 is 40489686.

68698404 = 453² + 454² + ... + 668².

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44195904 + 24502500 = 6648^2 + 4950^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 68698404.

It is not an unprimeable number, because it can be changed into a prime (68698403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 954109 + ... + 954180.

Almost surely, 2^68698404 is an apocalyptic number.

It is an amenable number.

68698404 is an abundant number, since it is smaller than the sum of its proper divisors (104955986).

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

68698404 is a wasteful number, since it uses less digits than its factorization.

68698404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908299 (or 1908294 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 68698404 is about 8288.4500360441. The cubic root of 68698404 is about 409.5581279549.

The spelling of 68698404 in words is "sixty-eight million, six hundred ninety-eight thousand, four hundred four".