64718842 has 8 divisors (see below), whose sum is σ = 98169300. Its totient is φ = 31995744.

The previous prime is 64718839. The next prime is 64718861. The reversal of 64718842 is 24881746.

It can be written as a sum of positive squares in 2 ways, for example, as 61763881 + 2954961 = 7859^2 + 1719^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 64718795 and 64718804.

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, 181617 + ... + 181972.

Almost surely, 2^64718842 is an apocalyptic number.

64718842 is a deficient number, since it is larger than the sum of its proper divisors (33450458).

64718842 is a wasteful number, since it uses less digits than its factorization.

64718842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363680.

The product of its digits is 86016, while the sum is 40.

The square root of 64718842 is about 8044.8021728318. The cubic root of 64718842 is about 401.4920153063.

The spelling of 64718842 in words is "sixty-four million, seven hundred eighteen thousand, eight hundred forty-two".