64771883 has 16 divisors (see below), whose sum is σ = 72448992. Its totient is φ = 57408000.

The previous prime is 64771879. The next prime is 64771897. The reversal of 64771883 is 38817746.

It is a cyclic number.

It is not a de Polignac number, because 64771883 - 2² = 64771879 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64771843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140273 + ... + 140733.

It is an arithmetic number, because the mean of its divisors is an integer number (4528062).

Almost surely, 2^64771883 is an apocalyptic number.

64771883 is a deficient number, since it is larger than the sum of its proper divisors (7677109).

64771883 is a wasteful number, since it uses less digits than its factorization.

64771883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its digits is 225792, while the sum is 44.

The square root of 64771883 is about 8048.0980983087. The cubic root of 64771883 is about 401.6016676749.

The spelling of 64771883 in words is "sixty-four million, seven hundred seventy-one thousand, eight hundred eighty-three".