64463018 has 4 divisors (see below), whose sum is σ = 96694530. Its totient is φ = 32231508.

The previous prime is 64462961. The next prime is 64463023. The reversal of 64463018 is 81036446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81036446 = 2 ⋅40518223.

It can be written as a sum of positive squares in only one way, i.e., 53684929 + 10778089 = 7327^2 + 3283^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16115753 + ... + 16115756.

Almost surely, 2^64463018 is an apocalyptic number.

64463018 is a deficient number, since it is larger than the sum of its proper divisors (32231512).

64463018 is a wasteful number, since it uses less digits than its factorization.

64463018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32231511.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 64463018 is about 8028.8864732290. The cubic root of 64463018 is about 400.9623039048.

The spelling of 64463018 in words is "sixty-four million, four hundred sixty-three thousand, eighteen".