840630774 has 32 divisors (see below), whose sum is σ = 1715261184. Its totient is φ = 274557920.

The previous prime is 840630757. The next prime is 840630797. The reversal of 840630774 is 477036048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345727 + ... + 348149.

It is an arithmetic number, because the mean of its divisors is an integer number (53601912).

Almost surely, 2^840630774 is an apocalyptic number.

840630774 is an abundant number, since it is smaller than the sum of its proper divisors (874630410).

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

840630774 is a wasteful number, since it uses less digits than its factorization.

840630774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 840630774 is about 28993.6333356135. The cubic root of 840630774 is about 943.7749114720.

The spelling of 840630774 in words is "eight hundred forty million, six hundred thirty thousand, seven hundred seventy-four".