64939003 has 4 divisors (see below), whose sum is σ = 65064168. Its totient is φ = 64813840.

The previous prime is 64939001. The next prime is 64939019. The reversal of 64939003 is 30093946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30093946 = 2 ⋅15046973.

It is a cyclic number.

It is not a de Polignac number, because 64939003 - 2¹ = 64939001 is a prime.

It is a super-2 number, since 2×64939003² = 8434148221268018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64939003.

It is not an unprimeable number, because it can be changed into a prime (64939001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61801 + ... + 62842.

It is an arithmetic number, because the mean of its divisors is an integer number (16266042).

Almost surely, 2^64939003 is an apocalyptic number.

64939003 is a deficient number, since it is larger than the sum of its proper divisors (125165).

64939003 is a wasteful number, since it uses less digits than its factorization.

64939003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125164.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 64939003 is about 8058.4739870524. The cubic root of 64939003 is about 401.9467661331.

The spelling of 64939003 in words is "sixty-four million, nine hundred thirty-nine thousand, three".