64798447 has 8 divisors (see below), whose sum is σ = 75161216. Its totient is φ = 54712152.

The previous prime is 64798439. The next prime is 64798471. The reversal of 64798447 is 74489746.

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

It is a cyclic number.

It is not a de Polignac number, because 64798447 - 2³ = 64798439 is a prime.

It is a super-2 number, since 2×64798447² = 8397677467223618, 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 64798447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64793447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68613 + ... + 69550.

It is an arithmetic number, because the mean of its divisors is an integer number (9395152).

Almost surely, 2^64798447 is an apocalyptic number.

64798447 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

64798447 is a deficient number, since it is larger than the sum of its proper divisors (10362769).

64798447 is a wasteful number, since it uses less digits than its factorization.

64798447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138237.

The product of its digits is 1354752, while the sum is 49.

The square root of 64798447 is about 8049.7482569333. The cubic root of 64798447 is about 401.6565612910.

The spelling of 64798447 in words is "sixty-four million, seven hundred ninety-eight thousand, four hundred forty-seven".