65648929 has 2 divisors, whose sum is σ = 65648930. Its totient is φ = 65648928.

The previous prime is 65648909. The next prime is 65648941. The reversal of 65648929 is 92984656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63632529 + 2016400 = 7977^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 65648929 - 2⁵ = 65648897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65648909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32824464 + 32824465.

It is an arithmetic number, because the mean of its divisors is an integer number (32824465).

Almost surely, 2^65648929 is an apocalyptic number.

It is an amenable number.

65648929 is a deficient number, since it is larger than the sum of its proper divisors (1).

65648929 is an equidigital number, since it uses as much as digits as its factorization.

65648929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

The square root of 65648929 is about 8102.4026683447. The cubic root of 65648929 is about 403.4061812426.

The spelling of 65648929 in words is "sixty-five million, six hundred forty-eight thousand, nine hundred twenty-nine".