840628605 has 32 divisors (see below), whose sum is σ = 1380040704. Its totient is φ = 436746816.

The previous prime is 840628573. The next prime is 840628661. The reversal of 840628605 is 506826048.

It is not a de Polignac number, because 840628605 - 2⁵ = 840628573 is a prime.

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, 154542 + ... + 159888.

It is an arithmetic number, because the mean of its divisors is an integer number (43126272).

Almost surely, 2^840628605 is an apocalyptic number.

It is an amenable number.

840628605 is a deficient number, since it is larger than the sum of its proper divisors (539412099).

840628605 is a wasteful number, since it uses less digits than its factorization.

840628605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 840628605 is about 28993.5959308258. The cubic root of 840628605 is about 943.7740997603.

The spelling of 840628605 in words is "eight hundred forty million, six hundred twenty-eight thousand, six hundred five".