653432657 has 2 divisors, whose sum is σ = 653432658. Its totient is φ = 653432656.

The previous prime is 653432641. The next prime is 653432677. The reversal of 653432657 is 756234356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382632721 + 270799936 = 19561^2 + 16456^2 .

It is a cyclic number.

It is not a de Polignac number, because 653432657 - 2⁴ = 653432641 is a prime.

It is not a weakly prime, because it can be changed into another prime (653432677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326716328 + 326716329.

It is an arithmetic number, because the mean of its divisors is an integer number (326716329).

Almost surely, 2^653432657 is an apocalyptic number.

It is an amenable number.

653432657 is a deficient number, since it is larger than the sum of its proper divisors (1).

653432657 is an equidigital number, since it uses as much as digits as its factorization.

653432657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 41.

The square root of 653432657 is about 25562.3288649528. The cubic root of 653432657 is about 867.7613015804.

The spelling of 653432657 in words is "six hundred fifty-three million, four hundred thirty-two thousand, six hundred fifty-seven".