396518666 has 16 divisors (see below), whose sum is σ = 630816768. Its totient is φ = 186529200.

The previous prime is 396518611. The next prime is 396518669. The reversal of 396518666 is 666815693.

It is a super-3 number, since 3×396518666³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (396518669) 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 7 ways as a sum of consecutive naturals, for example, 67850 + ... + 73461.

It is an arithmetic number, because the mean of its divisors is an integer number (39426048).

Almost surely, 2^396518666 is an apocalyptic number.

396518666 is a deficient number, since it is larger than the sum of its proper divisors (234298102).

396518666 is a wasteful number, since it uses less digits than its factorization.

396518666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141397.

The product of its digits is 1399680, while the sum is 50.

The square root of 396518666 is about 19912.7764513139. The cubic root of 396518666 is about 734.6625109238.

The spelling of 396518666 in words is "three hundred ninety-six million, five hundred eighteen thousand, six hundred sixty-six".