64398047 has 8 divisors (see below), whose sum is σ = 75309696. Its totient is φ = 53914392.

The previous prime is 64398041. The next prime is 64398071. The reversal of 64398047 is 74089346.

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

It is not a de Polignac number, because 64398047 - 2⁴ = 64398031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64397995 and 64398013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64398041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106673 + ... + 107274.

It is an arithmetic number, because the mean of its divisors is an integer number (9413712).

Almost surely, 2^64398047 is an apocalyptic number.

64398047 is a deficient number, since it is larger than the sum of its proper divisors (10911649).

64398047 is a wasteful number, since it uses less digits than its factorization.

64398047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213997.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 64398047 is about 8024.8393753395. The cubic root of 64398047 is about 400.8275512997.

The spelling of 64398047 in words is "sixty-four million, three hundred ninety-eight thousand, forty-seven".