605155640 has 32 divisors (see below), whose sum is σ = 1375090560. Its totient is φ = 239664000.

The previous prime is 605155631. The next prime is 605155669. The reversal of 605155640 is 46551506.

It is a junction number, because it is equal to n+sod(n) for n = 605155597 and 605155606.

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, 70856 + ... + 78935.

It is an arithmetic number, because the mean of its divisors is an integer number (42971580).

Almost surely, 2^605155640 is an apocalyptic number.

It is an amenable number.

605155640 is an abundant number, since it is smaller than the sum of its proper divisors (769934920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

605155640 is a wasteful number, since it uses less digits than its factorization.

605155640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149903 (or 149899 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 605155640 is about 24599.9113819542. The cubic root of 605155640 is about 845.8415760371.

The spelling of 605155640 in words is "six hundred five million, one hundred fifty-five thousand, six hundred forty".