64418437 has 2 divisors, whose sum is σ = 64418438. Its totient is φ = 64418436.

The previous prime is 64418401. The next prime is 64418449. The reversal of 64418437 is 73481446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54375876 + 10042561 = 7374^2 + 3169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64418437 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64418396 and 64418405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64418477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32209218 + 32209219.

It is an arithmetic number, because the mean of its divisors is an integer number (32209219).

Almost surely, 2^64418437 is an apocalyptic number.

It is an amenable number.

64418437 is a deficient number, since it is larger than the sum of its proper divisors (1).

64418437 is an equidigital number, since it uses as much as digits as its factorization.

64418437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 64418437 is about 8026.1097052059. The cubic root of 64418437 is about 400.8698507779.

It can be divided in two parts, 6441 and 8437, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 64418437 in words is "sixty-four million, four hundred eighteen thousand, four hundred thirty-seven".