840652546 has 8 divisors (see below), whose sum is σ = 1261643724. Its totient is φ = 420104640.

The previous prime is 840652531. The next prime is 840652573. The reversal of 840652546 is 645256048.

It can be written as a sum of positive squares in 2 ways, for example, as 836077225 + 4575321 = 28915^2 + 2139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 840652499 and 840652508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106035 + ... + 113686.

Almost surely, 2^840652546 is an apocalyptic number.

840652546 is a deficient number, since it is larger than the sum of its proper divisors (420991178).

840652546 is a wasteful number, since it uses less digits than its factorization.

840652546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221636.

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 840652546 is about 28994.0087949218. The cubic root of 840652546 is about 943.7830591989.

The spelling of 840652546 in words is "eight hundred forty million, six hundred fifty-two thousand, five hundred forty-six".