64947340 has 12 divisors (see below), whose sum is σ = 136389456. Its totient is φ = 25978928.

The previous prime is 64947287. The next prime is 64947341. The reversal of 64947340 is 4374946.

64947340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64947340.

It is not an unprimeable number, because it can be changed into a prime (64947341) 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 3 ways as a sum of consecutive naturals, for example, 1623664 + ... + 1623703.

It is an arithmetic number, because the mean of its divisors is an integer number (11365788).

Almost surely, 2^64947340 is an apocalyptic number.

It is an amenable number.

64947340 is an abundant number, since it is smaller than the sum of its proper divisors (71442116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64947340 is a wasteful number, since it uses less digits than its factorization.

64947340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247376 (or 3247374 counting only the distinct ones).

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

The square root of 64947340 is about 8058.9912520116. The cubic root of 64947340 is about 401.9639663089.

The spelling of 64947340 in words is "sixty-four million, nine hundred forty-seven thousand, three hundred forty".