64361867 has 2 divisors, whose sum is σ = 64361868. Its totient is φ = 64361866.

The previous prime is 64361849. The next prime is 64361897. The reversal of 64361867 is 76816346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64361867 - 2¹⁰ = 64360843 is a prime.

It is not a weakly prime, because it can be changed into another prime (64361807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32180933 + 32180934.

It is an arithmetic number, because the mean of its divisors is an integer number (32180934).

Almost surely, 2^64361867 is an apocalyptic number.

64361867 is a deficient number, since it is larger than the sum of its proper divisors (1).

64361867 is an equidigital number, since it uses as much as digits as its factorization.

64361867 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 64361867 is about 8022.5848079032. The cubic root of 64361867 is about 400.7524731561.

The spelling of 64361867 in words is "sixty-four million, three hundred sixty-one thousand, eight hundred sixty-seven".