64712069 has 2 divisors, whose sum is σ = 64712070. Its totient is φ = 64712068.

The previous prime is 64712059. The next prime is 64712071. The reversal of 64712069 is 96021746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62995969 + 1716100 = 7937^2 + 1310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64712069 is a prime.

It is a super-2 number, since 2×64712069² = 8375303748521522, which contains 22 as substring.

Together with 64712071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64712059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32356034 + 32356035.

It is an arithmetic number, because the mean of its divisors is an integer number (32356035).

Almost surely, 2^64712069 is an apocalyptic number.

It is an amenable number.

64712069 is a deficient number, since it is larger than the sum of its proper divisors (1).

64712069 is an equidigital number, since it uses as much as digits as its factorization.

64712069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 64712069 is about 8044.3812067803. The cubic root of 64712069 is about 401.4780090797.

The spelling of 64712069 in words is "sixty-four million, seven hundred twelve thousand, sixty-nine".