64428983 has 2 divisors, whose sum is σ = 64428984. Its totient is φ = 64428982.

The previous prime is 64428977. The next prime is 64429033. The reversal of 64428983 is 38982446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64428983 - 2⁴ = 64428967 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 (64428583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32214491 + 32214492.

It is an arithmetic number, because the mean of its divisors is an integer number (32214492).

Almost surely, 2^64428983 is an apocalyptic number.

64428983 is a deficient number, since it is larger than the sum of its proper divisors (1).

64428983 is an equidigital number, since it uses as much as digits as its factorization.

64428983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 44.

The square root of 64428983 is about 8026.7666591225. The cubic root of 64428983 is about 400.8917251716.

The spelling of 64428983 in words is "sixty-four million, four hundred twenty-eight thousand, nine hundred eighty-three".