400060064 has 12 divisors (see below), whose sum is σ = 787618314. Its totient is φ = 200030016.

The previous prime is 400060057. The next prime is 400060069. The reversal of 400060064 is 460060004.

It can be written as a sum of positive squares in only one way, i.e., 305970064 + 94090000 = 17492^2 + 9700^2 .

It is not an unprimeable number, because it can be changed into a prime (400060069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250907 + ... + 6250970.

Almost surely, 2^400060064 is an apocalyptic number.

It is an amenable number.

400060064 is a deficient number, since it is larger than the sum of its proper divisors (387558250).

400060064 is a wasteful number, since it uses less digits than its factorization.

400060064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12501887 (or 12501879 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 400060064 is about 20001.5015436342. The cubic root of 400060064 is about 736.8431774936.

The spelling of 400060064 in words is "four hundred million, sixty thousand, sixty-four".