667936420246 has 32 divisors (see below), whose sum is σ = 1079395257600. Its totient is φ = 308966464800.

The previous prime is 667936420219. The next prime is 667936420253. The reversal of 667936420246 is 642024639766.

It is a super-2 number, since 2×667936420246² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7996096 + ... + 8079196.

It is an arithmetic number, because the mean of its divisors is an integer number (33731101800).

Almost surely, 2^667936420246 is an apocalyptic number.

667936420246 is a deficient number, since it is larger than the sum of its proper divisors (411458837354).

667936420246 is a wasteful number, since it uses less digits than its factorization.

667936420246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88084.

The product of its (nonzero) digits is 15676416, while the sum is 55.

The spelling of 667936420246 in words is "six hundred sixty-seven billion, nine hundred thirty-six million, four hundred twenty thousand, two hundred forty-six".