64780417 has 8 divisors (see below), whose sum is σ = 70297920. Its totient is φ = 59339280.

The previous prime is 64780399. The next prime is 64780427. The reversal of 64780417 is 71408746.

64780417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64780417 - 2¹¹ = 64778369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64780427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17317 + ... + 20722.

It is an arithmetic number, because the mean of its divisors is an integer number (8787240).

Almost surely, 2^64780417 is an apocalyptic number.

It is an amenable number.

64780417 is a deficient number, since it is larger than the sum of its proper divisors (5517503).

64780417 is a wasteful number, since it uses less digits than its factorization.

64780417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38183.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 64780417 is about 8048.6282682206. The cubic root of 64780417 is about 401.6193045361.

The spelling of 64780417 in words is "sixty-four million, seven hundred eighty thousand, four hundred seventeen".