64136867 has 2 divisors, whose sum is σ = 64136868. Its totient is φ = 64136866.

The previous prime is 64136843. The next prime is 64136881. The reversal of 64136867 is 76863146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64136867 - 2¹⁶ = 64071331 is a prime.

It is a super-2 number, since 2×64136867² = 8227075417151378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64136887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32068433 + 32068434.

It is an arithmetic number, because the mean of its divisors is an integer number (32068434).

Almost surely, 2^64136867 is an apocalyptic number.

64136867 is a deficient number, since it is larger than the sum of its proper divisors (1).

64136867 is an equidigital number, since it uses as much as digits as its factorization.

64136867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 64136867 is about 8008.5496190009. The cubic root of 64136867 is about 400.2849365630.

The spelling of 64136867 in words is "sixty-four million, one hundred thirty-six thousand, eight hundred sixty-seven".