64484918 has 4 divisors (see below), whose sum is σ = 96727380. Its totient is φ = 32242458.

The previous prime is 64484873. The next prime is 64484957. The reversal of 64484918 is 81948446.

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

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, 16121228 + ... + 16121231.

It is an arithmetic number, because the mean of its divisors is an integer number (24181845).

Almost surely, 2^64484918 is an apocalyptic number.

64484918 is a deficient number, since it is larger than the sum of its proper divisors (32242462).

64484918 is a wasteful number, since it uses less digits than its factorization.

64484918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32242461.

The product of its digits is 221184, while the sum is 44.

The square root of 64484918 is about 8030.2501829021. The cubic root of 64484918 is about 401.0077050279.

The spelling of 64484918 in words is "sixty-four million, four hundred eighty-four thousand, nine hundred eighteen".