64854397 has 2 divisors, whose sum is σ = 64854398. Its totient is φ = 64854396.

The previous prime is 64854359. The next prime is 64854401. The reversal of 64854397 is 79345846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64738116 + 116281 = 8046^2 + 341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64854397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64854347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32427198 + 32427199.

It is an arithmetic number, because the mean of its divisors is an integer number (32427199).

Almost surely, 2^64854397 is an apocalyptic number.

It is an amenable number.

64854397 is a deficient number, since it is larger than the sum of its proper divisors (1).

64854397 is an equidigital number, since it uses as much as digits as its factorization.

64854397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 64854397 is about 8053.2227710402. Note that the first 3 decimals coincide. The cubic root of 64854397 is about 401.7721310346.

The spelling of 64854397 in words is "sixty-four million, eight hundred fifty-four thousand, three hundred ninety-seven".