667210401608 has 16 divisors (see below), whose sum is σ = 1305411655680. Its totient is φ = 319100626768.

The previous prime is 667210401547. The next prime is 667210401619. The reversal of 667210401608 is 806104012766.

667210401608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1813071560 + ... + 1813071927.

It is an arithmetic number, because the mean of its divisors is an integer number (81588228480).

Almost surely, 2^667210401608 is an apocalyptic number.

It is an amenable number.

667210401608 is a deficient number, since it is larger than the sum of its proper divisors (638201254072).

667210401608 is a wasteful number, since it uses less digits than its factorization.

667210401608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626143516 (or 3626143512 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 667210401608 in words is "six hundred sixty-seven billion, two hundred ten million, four hundred one thousand, six hundred eight".