840532664 has 32 divisors (see below), whose sum is σ = 1604294640. Its totient is φ = 412742400.

The previous prime is 840532657. The next prime is 840532673. The reversal of 840532664 is 466235048.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 566804 + ... + 568284.

Almost surely, 2^840532664 is an apocalyptic number.

It is an amenable number.

840532664 is a deficient number, since it is larger than the sum of its proper divisors (763761976).

840532664 is a wasteful number, since it uses less digits than its factorization.

840532664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 840532664 is about 28991.9413630754. The cubic root of 840532664 is about 943.7381940602.

The spelling of 840532664 in words is "eight hundred forty million, five hundred thirty-two thousand, six hundred sixty-four".