840252654 has 12 divisors (see below), whose sum is σ = 1820547456. Its totient is φ = 280084212.

The previous prime is 840252653. The next prime is 840252661. The reversal of 840252654 is 456252048.

It is a happy number.

840252654 is a `hidden beast` number, since 84 + 0 + 2 + 526 + 54 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840252653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23340334 + ... + 23340369.

It is an arithmetic number, because the mean of its divisors is an integer number (151712288).

Almost surely, 2^840252654 is an apocalyptic number.

840252654 is an abundant number, since it is smaller than the sum of its proper divisors (980294802).

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

840252654 is a wasteful number, since it uses less digits than its factorization.

840252654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46680711 (or 46680708 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 840252654 is about 28987.1118602734. Note that the first 3 decimals coincide. The cubic root of 840252654 is about 943.6333853309.

The spelling of 840252654 in words is "eight hundred forty million, two hundred fifty-two thousand, six hundred fifty-four".