400070668 has 12 divisors (see below), whose sum is σ = 710573752. Its totient is φ = 197049600.

The previous prime is 400070651. The next prime is 400070683. The reversal of 400070668 is 866070004.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 746133 + ... + 746668.

Almost surely, 2^400070668 is an apocalyptic number.

It is an amenable number.

400070668 is a deficient number, since it is larger than the sum of its proper divisors (310503084).

400070668 is a wasteful number, since it uses less digits than its factorization.

400070668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492872 (or 1492870 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 400070668 is about 20001.7666219762. The cubic root of 400070668 is about 736.8496876961.

The spelling of 400070668 in words is "four hundred million, seventy thousand, six hundred sixty-eight".