666742462 has 16 divisors (see below), whose sum is σ = 1013760000. Its totient is φ = 328830840.

The previous prime is 666742459. The next prime is 666742501. The reversal of 666742462 is 264247666.

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, 314787 + ... + 316897.

It is an arithmetic number, because the mean of its divisors is an integer number (63360000).

Almost surely, 2^666742462 is an apocalyptic number.

666742462 is a deficient number, since it is larger than the sum of its proper divisors (347017538).

666742462 is a wasteful number, since it uses less digits than its factorization.

666742462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4191.

The product of its digits is 580608, while the sum is 43.

The square root of 666742462 is about 25821.3567033183. The cubic root of 666742462 is about 873.6135701430.

The spelling of 666742462 in words is "six hundred sixty-six million, seven hundred forty-two thousand, four hundred sixty-two".