64805842 has 8 divisors (see below), whose sum is σ = 98171532. Its totient is φ = 32082000.

The previous prime is 64805837. The next prime is 64805843. The reversal of 64805842 is 24850846.

It can be written as a sum of positive squares in 2 ways, for example, as 57138481 + 7667361 = 7559^2 + 2769^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64805843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 160209 + ... + 160612.

Almost surely, 2^64805842 is an apocalyptic number.

64805842 is a deficient number, since it is larger than the sum of its proper divisors (33365690).

64805842 is a wasteful number, since it uses less digits than its factorization.

64805842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320924.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 64805842 is about 8050.2075749635. The cubic root of 64805842 is about 401.6718401412.

The spelling of 64805842 in words is "sixty-four million, eight hundred five thousand, eight hundred forty-two".