64019121 has 8 divisors (see below), whose sum is σ = 85503264. Its totient is φ = 42607200.

The previous prime is 64019107. The next prime is 64019129. The reversal of 64019121 is 12191046.

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

It is not a de Polignac number, because 64019121 - 2⁵ = 64019089 is a prime.

It is a super-2 number, since 2×64019121² = 8196895707225282, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64019091 and 64019100.

It is not an unprimeable number, because it can be changed into a prime (64019129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15951 + ... + 19556.

It is an arithmetic number, because the mean of its divisors is an integer number (10687908).

Almost surely, 2^64019121 is an apocalyptic number.

It is an amenable number.

64019121 is a deficient number, since it is larger than the sum of its proper divisors (21484143).

64019121 is a wasteful number, since it uses less digits than its factorization.

64019121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36111.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 64019121 is about 8001.1949732524. The cubic root of 64019121 is about 400.0398314502.

The spelling of 64019121 in words is "sixty-four million, nineteen thousand, one hundred twenty-one".