64540907 has 2 divisors, whose sum is σ = 64540908. Its totient is φ = 64540906.

The previous prime is 64540877. The next prime is 64540951. The reversal of 64540907 is 70904546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64540907 - 2⁶ = 64540843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64543907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32270453 + 32270454.

It is an arithmetic number, because the mean of its divisors is an integer number (32270454).

Almost surely, 2^64540907 is an apocalyptic number.

64540907 is a deficient number, since it is larger than the sum of its proper divisors (1).

64540907 is an equidigital number, since it uses as much as digits as its factorization.

64540907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 64540907 is about 8033.7355570121. The cubic root of 64540907 is about 401.1237297059.

The spelling of 64540907 in words is "sixty-four million, five hundred forty thousand, nine hundred seven".