64917479 has 8 divisors (see below), whose sum is σ = 71046288. Its totient is φ = 58826560.

The previous prime is 64917469. The next prime is 64917491. The reversal of 64917479 is 97471946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64917479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64917469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5822 + ... + 12795.

It is an arithmetic number, because the mean of its divisors is an integer number (8880786).

Almost surely, 2^64917479 is an apocalyptic number.

64917479 is a deficient number, since it is larger than the sum of its proper divisors (6128809).

64917479 is a wasteful number, since it uses less digits than its factorization.

64917479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18945.

The product of its digits is 381024, while the sum is 47.

The square root of 64917479 is about 8057.1383877900. The cubic root of 64917479 is about 401.9023528745.

The spelling of 64917479 in words is "sixty-four million, nine hundred seventeen thousand, four hundred seventy-nine".