400064766 has 16 divisors (see below), whose sum is σ = 801385488. Its totient is φ = 133145600.

The previous prime is 400064759. The next prime is 400064789. The reversal of 400064766 is 667460004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48165 + ... + 55856.

It is an arithmetic number, because the mean of its divisors is an integer number (50086593).

Almost surely, 2^400064766 is an apocalyptic number.

400064766 is an abundant number, since it is smaller than the sum of its proper divisors (401320722).

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

400064766 is a wasteful number, since it uses less digits than its factorization.

400064766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104667.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 400064766 is about 20001.6190844641. The cubic root of 400064766 is about 736.8460642460.

The spelling of 400064766 in words is "four hundred million, sixty-four thousand, seven hundred sixty-six".