611606665406 has 64 divisors (see below), whose sum is σ = 1050579279360. Its totient is φ = 264465936000.

The previous prime is 611606665399. The next prime is 611606665433. The reversal of 611606665406 is 604566606116.

611606665406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91815716 + ... + 91822376.

It is an arithmetic number, because the mean of its divisors is an integer number (16415301240).

Almost surely, 2^611606665406 is an apocalyptic number.

611606665406 is a deficient number, since it is larger than the sum of its proper divisors (438972613954).

611606665406 is a wasteful number, since it uses less digits than its factorization.

611606665406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8801.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 611606665406 in words is "six hundred eleven billion, six hundred six million, six hundred sixty-five thousand, four hundred six".