65620783 has 2 divisors, whose sum is σ = 65620784. Its totient is φ = 65620782.

The previous prime is 65620759. The next prime is 65620829. The reversal of 65620783 is 38702656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65620783 - 2⁹ = 65620271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65620733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32810391 + 32810392.

It is an arithmetic number, because the mean of its divisors is an integer number (32810392).

Almost surely, 2^65620783 is an apocalyptic number.

65620783 is a deficient number, since it is larger than the sum of its proper divisors (1).

65620783 is an equidigital number, since it uses as much as digits as its factorization.

65620783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 65620783 is about 8100.6655899377. The cubic root of 65620783 is about 403.3485215387.

The spelling of 65620783 in words is "sixty-five million, six hundred twenty thousand, seven hundred eighty-three".