64467866 has 4 divisors (see below), whose sum is σ = 96701802. Its totient is φ = 32233932.

The previous prime is 64467857. The next prime is 64467883. The reversal of 64467866 is 66876446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64464841 + 3025 = 8029^2 + 55^2 .

It is a super-2 number, since 2×64467866² = 8312211493187912, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64467866.

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 as a sum of consecutive naturals, namely, 16116965 + ... + 16116968.

Almost surely, 2^64467866 is an apocalyptic number.

64467866 is a deficient number, since it is larger than the sum of its proper divisors (32233936).

64467866 is a wasteful number, since it uses less digits than its factorization.

64467866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32233935.

The product of its digits is 1161216, while the sum is 47.

The square root of 64467866 is about 8029.1883774140. The cubic root of 64467866 is about 400.9723552313.

The spelling of 64467866 in words is "sixty-four million, four hundred sixty-seven thousand, eight hundred sixty-six".