64955947 has 8 divisors (see below), whose sum is σ = 74778336. Its totient is φ = 55269312.

The previous prime is 64955939. The next prime is 64955959. The reversal of 64955947 is 74955946.

It is a happy number.

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

It is not a de Polignac number, because 64955947 - 2³ = 64955939 is a prime.

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 64955947.

It is not an unprimeable number, because it can be changed into a prime (64955977) 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, 32908 + ... + 34825.

It is an arithmetic number, because the mean of its divisors is an integer number (9347292).

Almost surely, 2^64955947 is an apocalyptic number.

64955947 is a deficient number, since it is larger than the sum of its proper divisors (9822389).

64955947 is a wasteful number, since it uses less digits than its factorization.

64955947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67877.

The product of its digits is 1360800, while the sum is 49.

The square root of 64955947 is about 8059.5252341562. The cubic root of 64955947 is about 401.9817219811.

Subtracting 64955947 from its reverse (74955946), we obtain a palindrome (9999999).

The spelling of 64955947 in words is "sixty-four million, nine hundred fifty-five thousand, nine hundred forty-seven".