64284979 has 8 divisors (see below), whose sum is σ = 72391680. Its totient is φ = 56555400.

The previous prime is 64284901. The next prime is 64284989. The reversal of 64284979 is 97948246.

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

It is not a de Polignac number, because 64284979 - 2¹¹ = 64282931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64284989) 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, 93919 + ... + 94600.

It is an arithmetic number, because the mean of its divisors is an integer number (9048960).

Almost surely, 2^64284979 is an apocalyptic number.

64284979 is a deficient number, since it is larger than the sum of its proper divisors (8106701).

64284979 is a wasteful number, since it uses less digits than its factorization.

64284979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188561.

The product of its digits is 870912, while the sum is 49.

The square root of 64284979 is about 8017.7914041212. The cubic root of 64284979 is about 400.5928272057.

The spelling of 64284979 in words is "sixty-four million, two hundred eighty-four thousand, nine hundred seventy-nine".