64461445 has 8 divisors (see below), whose sum is σ = 78622200. Its totient is φ = 50723520.

The previous prime is 64461413. The next prime is 64461451. The reversal of 64461445 is 54416446.

It can be written as a sum of positive squares in 4 ways, for example, as 5755201 + 58706244 = 2399^2 + 7662^2 .

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

It is not a de Polignac number, because 64461445 - 2⁵ = 64461413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64461445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105370 + ... + 105979.

It is an arithmetic number, because the mean of its divisors is an integer number (9827775).

Almost surely, 2^64461445 is an apocalyptic number.

It is an amenable number.

64461445 is a deficient number, since it is larger than the sum of its proper divisors (14160755).

64461445 is a wasteful number, since it uses less digits than its factorization.

64461445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211415.

The product of its digits is 46080, while the sum is 34.

The square root of 64461445 is about 8028.7885138419. The cubic root of 64461445 is about 400.9590425060.

The spelling of 64461445 in words is "sixty-four million, four hundred sixty-one thousand, four hundred forty-five".