64378283 has 2 divisors, whose sum is σ = 64378284. Its totient is φ = 64378282.

The previous prime is 64378277. The next prime is 64378313. The reversal of 64378283 is 38287346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64378283 - 2¹² = 64374187 is a prime.

It is a super-3 number, since 3×64378283³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64378283.

It is not a weakly prime, because it can be changed into another prime (64378183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32189141 + 32189142.

It is an arithmetic number, because the mean of its divisors is an integer number (32189142).

Almost surely, 2^64378283 is an apocalyptic number.

64378283 is a deficient number, since it is larger than the sum of its proper divisors (1).

64378283 is an equidigital number, since it uses as much as digits as its factorization.

64378283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 41.

The square root of 64378283 is about 8023.6078543259. The cubic root of 64378283 is about 400.7865419490.

The spelling of 64378283 in words is "sixty-four million, three hundred seventy-eight thousand, two hundred eighty-three".