653345651 has 4 divisors (see below), whose sum is σ = 746680752. Its totient is φ = 560010552.

The previous prime is 653345639. The next prime is 653345653. The reversal of 653345651 is 156543356.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-653345651 is a prime.

It is a super-2 number, since 2×653345651² = 853721079361227602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653345653) 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, 46667540 + ... + 46667553.

It is an arithmetic number, because the mean of its divisors is an integer number (186670188).

Almost surely, 2^653345651 is an apocalyptic number.

653345651 is a deficient number, since it is larger than the sum of its proper divisors (93335101).

653345651 is an equidigital number, since it uses as much as digits as its factorization.

653345651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93335100.

The product of its digits is 162000, while the sum is 38.

The square root of 653345651 is about 25560.6269680538. The cubic root of 653345651 is about 867.7227850935.

The spelling of 653345651 in words is "six hundred fifty-three million, three hundred forty-five thousand, six hundred fifty-one".