64872242 has 8 divisors (see below), whose sum is σ = 98311836. Its totient is φ = 32101632.

The previous prime is 64872239. The next prime is 64872263. The reversal of 64872242 is 24227846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63664441 + 1207801 = 7979^2 + 1099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167003 + ... + 167390.

Almost surely, 2^64872242 is an apocalyptic number.

64872242 is a deficient number, since it is larger than the sum of its proper divisors (33439594).

64872242 is a wasteful number, since it uses less digits than its factorization.

64872242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334492.

The product of its digits is 43008, while the sum is 35.

The square root of 64872242 is about 8054.3306363720. The cubic root of 64872242 is about 401.8089775016.

The spelling of 64872242 in words is "sixty-four million, eight hundred seventy-two thousand, two hundred forty-two".