64467838 has 16 divisors (see below), whose sum is σ = 99768240. Its totient is φ = 31219776.

The previous prime is 64467797. The next prime is 64467839. The reversal of 64467838 is 83876446.

It is a super-2 number, since 2×64467838² = 8312204272788488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64467839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15373 + ... + 19111.

It is an arithmetic number, because the mean of its divisors is an integer number (6235515).

Almost surely, 2^64467838 is an apocalyptic number.

64467838 is a deficient number, since it is larger than the sum of its proper divisors (35300402).

64467838 is a wasteful number, since it uses less digits than its factorization.

64467838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011.

The product of its digits is 774144, while the sum is 46.

The square root of 64467838 is about 8029.1866337756. The cubic root of 64467838 is about 400.9722971805.

The spelling of 64467838 in words is "sixty-four million, four hundred sixty-seven thousand, eight hundred thirty-eight".