653401885 has 8 divisors (see below), whose sum is σ = 830204856. Its totient is φ = 491973120.

The previous prime is 653401883. The next prime is 653401897. The reversal of 653401885 is 588104356.

It can be written as a sum of positive squares in 4 ways, for example, as 145395364 + 508006521 = 12058^2 + 22539^2 .

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

It is not a de Polignac number, because 653401885 - 2¹ = 653401883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653401883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3843456 + ... + 3843625.

It is an arithmetic number, because the mean of its divisors is an integer number (103775607).

Almost surely, 2^653401885 is an apocalyptic number.

It is an amenable number.

653401885 is a deficient number, since it is larger than the sum of its proper divisors (176802971).

653401885 is a wasteful number, since it uses less digits than its factorization.

653401885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687103.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 653401885 is about 25561.7269565262. The cubic root of 653401885 is about 867.7476795850.

The spelling of 653401885 in words is "six hundred fifty-three million, four hundred one thousand, eight hundred eighty-five".