653472991 has 2 divisors, whose sum is σ = 653472992. Its totient is φ = 653472990.

The previous prime is 653472971. The next prime is 653473001. The reversal of 653472991 is 199274356.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653472991 - 2⁵ = 653472959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653472961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326736495 + 326736496.

It is an arithmetic number, because the mean of its divisors is an integer number (326736496).

Almost surely, 2^653472991 is an apocalyptic number.

653472991 is a deficient number, since it is larger than the sum of its proper divisors (1).

653472991 is an equidigital number, since it uses as much as digits as its factorization.

653472991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 653472991 is about 25563.1177871558. The cubic root of 653472991 is about 867.7791557866.

The spelling of 653472991 in words is "six hundred fifty-three million, four hundred seventy-two thousand, nine hundred ninety-one".