64407069 has 10 divisors (see below), whose sum is σ = 96213150. Its totient is φ = 42937992.

The previous prime is 64407059. The next prime is 64407071. The reversal of 64407069 is 96070446.

64407069 is a `hidden beast` number, since 644 + 0 + 7 + 0 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54199044 + 10208025 = 7362^2 + 3195^2 .

It is not a de Polignac number, because 64407069 - 2⁴ = 64407053 is a prime.

It is a super-2 number, since 2×64407069² = 8296541074341522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64407059) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 397494 + ... + 397655.

It is an arithmetic number, because the mean of its divisors is an integer number (9621315).

Almost surely, 2^64407069 is an apocalyptic number.

It is an amenable number.

64407069 is a deficient number, since it is larger than the sum of its proper divisors (31806081).

64407069 is an equidigital number, since it uses as much as digits as its factorization.

64407069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795161 (or 795152 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 64407069 is about 8025.4014852841. The cubic root of 64407069 is about 400.8462687271.

The spelling of 64407069 in words is "sixty-four million, four hundred seven thousand, sixty-nine".