64360731 has 8 divisors (see below), whose sum is σ = 85880080. Its totient is φ = 42874272.

The previous prime is 64360721. The next prime is 64360741. The reversal of 64360731 is 13706346.

64360731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64360721) and next prime (64360741).

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

It is not a de Polignac number, because 64360731 - 2¹¹ = 64358683 is a prime.

It is a super-2 number, since 2×64360731² = 8284607389708722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64360711) 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 7 ways as a sum of consecutive naturals, for example, 3220 + ... + 11793.

It is an arithmetic number, because the mean of its divisors is an integer number (10735010).

Almost surely, 2^64360731 is an apocalyptic number.

64360731 is a deficient number, since it is larger than the sum of its proper divisors (21519349).

64360731 is a wasteful number, since it uses less digits than its factorization.

64360731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16445.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 64360731 is about 8022.5140074667. The cubic root of 64360731 is about 400.7501153547.

The spelling of 64360731 in words is "sixty-four million, three hundred sixty thousand, seven hundred thirty-one".