64744746 has 32 divisors (see below), whose sum is σ = 145084608. Its totient is φ = 19088640.

The previous prime is 64744711. The next prime is 64744769.

64744746 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64744698 and 64744707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10815 + ... + 15698.

It is an arithmetic number, because the mean of its divisors is an integer number (4533894).

Almost surely, 2^64744746 is an apocalyptic number.

64744746 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64744746 is an abundant number, since it is smaller than the sum of its proper divisors (80339862).

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

64744746 is a wasteful number, since it uses less digits than its factorization.

64744746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26566.

The product of its digits is 451584, while the sum is 42.

The square root of 64744746 is about 8046.4119954176. The cubic root of 64744746 is about 401.5455744737.

It can be divided in two parts, 64 and 744746, that added together give a triangular number (744810 = T₁₂₂₀).

The spelling of 64744746 in words is "sixty-four million, seven hundred forty-four thousand, seven hundred forty-six".