400066698 has 24 divisors (see below), whose sum is σ = 844466688. Its totient is φ = 126336168.

The previous prime is 400066697. The next prime is 400066739. The reversal of 400066698 is 896660004.

It is not an unprimeable number, because it can be changed into a prime (400066691) 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 11 ways as a sum of consecutive naturals, for example, 90186 + ... + 94517.

It is an arithmetic number, because the mean of its divisors is an integer number (35186112).

Almost surely, 2^400066698 is an apocalyptic number.

400066698 is an abundant number, since it is smaller than the sum of its proper divisors (444399990).

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

400066698 is a wasteful number, since it uses less digits than its factorization.

400066698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184746 (or 184727 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 400066698 is about 20001.6673804961. The cubic root of 400066698 is about 736.8472503742.

The spelling of 400066698 in words is "four hundred million, sixty-six thousand, six hundred ninety-eight".