653612851 has 4 divisors (see below), whose sum is σ = 654758104. Its totient is φ = 652467600.

The previous prime is 653612849. The next prime is 653612891. The reversal of 653612851 is 158216356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 653612851 - 2¹ = 653612849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 653612851.

It is not an unprimeable number, because it can be changed into a prime (653612831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571770 + ... + 572911.

It is an arithmetic number, because the mean of its divisors is an integer number (163689526).

Almost surely, 2^653612851 is an apocalyptic number.

653612851 is a deficient number, since it is larger than the sum of its proper divisors (1145253).

653612851 is a wasteful number, since it uses less digits than its factorization.

653612851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145252.

The product of its digits is 43200, while the sum is 37.

The square root of 653612851 is about 25565.8532226093. The cubic root of 653612851 is about 867.8410603778.

The spelling of 653612851 in words is "six hundred fifty-three million, six hundred twelve thousand, eight hundred fifty-one".