64481366 has 4 divisors (see below), whose sum is σ = 96722052. Its totient is φ = 32240682.

The previous prime is 64481353. The next prime is 64481371. The reversal of 64481366 is 66318446.

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

It is a super-2 number, since 2×64481366² = 8315693122451912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16120340 + ... + 16120343.

It is an arithmetic number, because the mean of its divisors is an integer number (24180513).

Almost surely, 2^64481366 is an apocalyptic number.

64481366 is a deficient number, since it is larger than the sum of its proper divisors (32240686).

64481366 is a wasteful number, since it uses less digits than its factorization.

64481366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32240685.

The product of its digits is 82944, while the sum is 38.

The square root of 64481366 is about 8030.0290161369. The cubic root of 64481366 is about 401.0003420374. Note that the first 3 decimals are identical.

The spelling of 64481366 in words is "sixty-four million, four hundred eighty-one thousand, three hundred sixty-six".