840610722 has 32 divisors (see below), whose sum is σ = 1922291712. Its totient is φ = 240062544.

The previous prime is 840610721. The next prime is 840610751. The reversal of 840610722 is 227016048.

It is a super-2 number, since 2×840610722² = 1413252771882722568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 840610722.

It is not an unprimeable number, because it can be changed into a prime (840610721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137413 + ... + 143399.

It is an arithmetic number, because the mean of its divisors is an integer number (60071616).

Almost surely, 2^840610722 is an apocalyptic number.

840610722 is an abundant number, since it is smaller than the sum of its proper divisors (1081680990).

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

840610722 is a wasteful number, since it uses less digits than its factorization.

840610722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9342.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 840610722 is about 28993.2875334964. The cubic root of 840610722 is about 943.7674072955.

The spelling of 840610722 in words is "eight hundred forty million, six hundred ten thousand, seven hundred twenty-two".