64985707 has 2 divisors, whose sum is σ = 64985708. Its totient is φ = 64985706.

The previous prime is 64985689. The next prime is 64985729. The reversal of 64985707 is 70758946.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64985707 is a prime.

It is a super-3 number, since 3×64985707³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64985737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32492853 + 32492854.

It is an arithmetic number, because the mean of its divisors is an integer number (32492854).

Almost surely, 2^64985707 is an apocalyptic number.

64985707 is a deficient number, since it is larger than the sum of its proper divisors (1).

64985707 is an equidigital number, since it uses as much as digits as its factorization.

64985707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 64985707 is about 8061.3712853335. The cubic root of 64985707 is about 402.0431028096.

The spelling of 64985707 in words is "sixty-four million, nine hundred eighty-five thousand, seven hundred seven".