65672899 has 2 divisors, whose sum is σ = 65672900. Its totient is φ = 65672898.

The previous prime is 65672851. The next prime is 65672909. The reversal of 65672899 is 99827656.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65672899 - 2²¹ = 63575747 is a prime.

It is not a weakly prime, because it can be changed into another prime (65672839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32836449 + 32836450.

It is an arithmetic number, because the mean of its divisors is an integer number (32836450).

Almost surely, 2^65672899 is an apocalyptic number.

65672899 is a deficient number, since it is larger than the sum of its proper divisors (1).

65672899 is an equidigital number, since it uses as much as digits as its factorization.

65672899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The square root of 65672899 is about 8103.8817242109. The cubic root of 65672899 is about 403.4552730287.

The spelling of 65672899 in words is "sixty-five million, six hundred seventy-two thousand, eight hundred ninety-nine".