64144246 has 4 divisors (see below), whose sum is σ = 96216372. Its totient is φ = 32072122.

The previous prime is 64144219. The next prime is 64144343. The reversal of 64144246 is 64244146.

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

It is a super-2 number, since 2×64144246² = 8228968589817032, which contains 22 as substring.

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, 16036060 + ... + 16036063.

It is an arithmetic number, because the mean of its divisors is an integer number (24054093).

Almost surely, 2^64144246 is an apocalyptic number.

64144246 is a deficient number, since it is larger than the sum of its proper divisors (32072126).

64144246 is a wasteful number, since it uses less digits than its factorization.

64144246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32072125.

The product of its digits is 18432, while the sum is 31.

The square root of 64144246 is about 8009.0103009049. The cubic root of 64144246 is about 400.3002870129.

The spelling of 64144246 in words is "sixty-four million, one hundred forty-four thousand, two hundred forty-six".