653432645 has 8 divisors (see below), whose sum is σ = 818211456. Its totient is φ = 500017936.

The previous prime is 653432641. The next prime is 653432657. The reversal of 653432645 is 546234356.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 653432645 - 2² = 653432641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 653432599 and 653432608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653432641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2840897 + ... + 2841126.

It is an arithmetic number, because the mean of its divisors is an integer number (102276432).

Almost surely, 2^653432645 is an apocalyptic number.

It is an amenable number.

653432645 is a deficient number, since it is larger than the sum of its proper divisors (164778811).

653432645 is a wasteful number, since it uses less digits than its factorization.

653432645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682051.

The product of its digits is 259200, while the sum is 38.

The square root of 653432645 is about 25562.3286302324. The cubic root of 653432645 is about 867.7612962684.

The spelling of 653432645 in words is "six hundred fifty-three million, four hundred thirty-two thousand, six hundred forty-five".