64961284 has 12 divisors (see below), whose sum is σ = 120369564. Its totient is φ = 30569984.

The previous prime is 64961249. The next prime is 64961287. The reversal of 64961284 is 48216946.

It can be written as a sum of positive squares in 2 ways, for example, as 60217600 + 4743684 = 7760^2 + 2178^2 .

It is not an unprimeable number, because it can be changed into a prime (64961287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477589 + ... + 477724.

It is an arithmetic number, because the mean of its divisors is an integer number (10030797).

Almost surely, 2^64961284 is an apocalyptic number.

It is an amenable number.

64961284 is a deficient number, since it is larger than the sum of its proper divisors (55408280).

64961284 is a wasteful number, since it uses less digits than its factorization.

64961284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955334 (or 955332 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 64961284 is about 8059.8563262629. The cubic root of 64961284 is about 401.9927310716.

The spelling of 64961284 in words is "sixty-four million, nine hundred sixty-one thousand, two hundred eighty-four".