65430691 has 2 divisors, whose sum is σ = 65430692. Its totient is φ = 65430690.

The previous prime is 65430619. The next prime is 65430713. The reversal of 65430691 is 19603456.

Together with previous prime (65430619) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65430691 - 2¹⁵ = 65397923 is a prime.

It is not a weakly prime, because it can be changed into another prime (65430611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32715345 + 32715346.

It is an arithmetic number, because the mean of its divisors is an integer number (32715346).

Almost surely, 2^65430691 is an apocalyptic number.

65430691 is a deficient number, since it is larger than the sum of its proper divisors (1).

65430691 is an equidigital number, since it uses as much as digits as its factorization.

65430691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 65430691 is about 8088.9239704673. The cubic root of 65430691 is about 402.9586680022.

The spelling of 65430691 in words is "sixty-five million, four hundred thirty thousand, six hundred ninety-one".