65627491 has 2 divisors, whose sum is σ = 65627492. Its totient is φ = 65627490.

The previous prime is 65627489. The next prime is 65627509. The reversal of 65627491 is 19472656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65627491 - 2¹ = 65627489 is a prime.

Together with 65627489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65627431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32813745 + 32813746.

It is an arithmetic number, because the mean of its divisors is an integer number (32813746).

Almost surely, 2^65627491 is an apocalyptic number.

65627491 is a deficient number, since it is larger than the sum of its proper divisors (1).

65627491 is an equidigital number, since it uses as much as digits as its factorization.

65627491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 65627491 is about 8101.0796194088. The cubic root of 65627491 is about 403.3622649981.

The spelling of 65627491 in words is "sixty-five million, six hundred twenty-seven thousand, four hundred ninety-one".