653641427 has 2 divisors, whose sum is σ = 653641428. Its totient is φ = 653641426.

The previous prime is 653641403. The next prime is 653641459. The reversal of 653641427 is 724146356.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653641427 - 2¹² = 653637331 is a prime.

It is not a weakly prime, because it can be changed into another prime (653641487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326820713 + 326820714.

It is an arithmetic number, because the mean of its divisors is an integer number (326820714).

Almost surely, 2^653641427 is an apocalyptic number.

653641427 is a deficient number, since it is larger than the sum of its proper divisors (1).

653641427 is an equidigital number, since it uses as much as digits as its factorization.

653641427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 653641427 is about 25566.4120869550. The cubic root of 653641427 is about 867.8537075510.

The spelling of 653641427 in words is "six hundred fifty-three million, six hundred forty-one thousand, four hundred twenty-seven".