653254765 has 4 divisors (see below), whose sum is σ = 783905724. Its totient is φ = 522603808.

The previous prime is 653254759. The next prime is 653254787. The reversal of 653254765 is 567452356.

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

It can be written as a sum of positive squares in 2 ways, for example, as 492751204 + 160503561 = 22198^2 + 12669^2 .

It is a cyclic number.

It is not a de Polignac number, because 653254765 - 2¹⁷ = 653123693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65325472 + ... + 65325481.

It is an arithmetic number, because the mean of its divisors is an integer number (195976431).

Almost surely, 2^653254765 is an apocalyptic number.

It is an amenable number.

653254765 is a deficient number, since it is larger than the sum of its proper divisors (130650959).

653254765 is a wasteful number, since it uses less digits than its factorization.

653254765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130650958.

The product of its digits is 756000, while the sum is 43.

The square root of 653254765 is about 25558.8490546816. The cubic root of 653254765 is about 867.6825473265.

The spelling of 653254765 in words is "six hundred fifty-three million, two hundred fifty-four thousand, seven hundred sixty-five".