64943047 has 8 divisors (see below), whose sum is σ = 72195200. Its totient is φ = 58013280.

The previous prime is 64943041. The next prime is 64943051. The reversal of 64943047 is 74034946.

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

It is not a de Polignac number, because 64943047 - 2¹¹ = 64940999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64942997 and 64943015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64943041) 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, 80172 + ... + 80977.

It is an arithmetic number, because the mean of its divisors is an integer number (9024400).

Almost surely, 2^64943047 is an apocalyptic number.

64943047 is a deficient number, since it is larger than the sum of its proper divisors (7252153).

64943047 is a wasteful number, since it uses less digits than its factorization.

64943047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161193.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 64943047 is about 8058.7248991388. The cubic root of 64943047 is about 401.9551095472.

The spelling of 64943047 in words is "sixty-four million, nine hundred forty-three thousand, forty-seven".