64766889 has 48 divisors (see below), whose sum is σ = 111870720. Its totient is φ = 35642880.

The previous prime is 64766879. The next prime is 64766917. The reversal of 64766889 is 98866746.

It is not a de Polignac number, because 64766889 - 2¹¹ = 64764841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64766879) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48144 + ... + 49470.

It is an arithmetic number, because the mean of its divisors is an integer number (2330640).

Almost surely, 2^64766889 is an apocalyptic number.

It is an amenable number.

64766889 is a deficient number, since it is larger than the sum of its proper divisors (47103831).

64766889 is a wasteful number, since it uses less digits than its factorization.

64766889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1387 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 64766889 is about 8047.7878326904. The cubic root of 64766889 is about 401.5913460653.

The spelling of 64766889 in words is "sixty-four million, seven hundred sixty-six thousand, eight hundred eighty-nine".