64858069 has 2 divisors, whose sum is σ = 64858070. Its totient is φ = 64858068.

The previous prime is 64858049. The next prime is 64858081. The reversal of 64858069 is 96085846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 4251844 = 7785^2 + 2062^2 .

It is a cyclic number.

It is not a de Polignac number, because 64858069 - 2⁹ = 64857557 is a prime.

It is a super-2 number, since 2×64858069² = 8413138228817522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64858019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32429034 + 32429035.

It is an arithmetic number, because the mean of its divisors is an integer number (32429035).

Almost surely, 2^64858069 is an apocalyptic number.

It is an amenable number.

64858069 is a deficient number, since it is larger than the sum of its proper divisors (1).

64858069 is an equidigital number, since it uses as much as digits as its factorization.

64858069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 64858069 is about 8053.4507510756. The cubic root of 64858069 is about 401.7797135553.

The spelling of 64858069 in words is "sixty-four million, eight hundred fifty-eight thousand, sixty-nine".