64435121 has 8 divisors (see below), whose sum is σ = 68506560. Its totient is φ = 60469552.

The previous prime is 64435109. The next prime is 64435153. The reversal of 64435121 is 12153446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64435121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64435171) 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, 25211 + ... + 27648.

It is an arithmetic number, because the mean of its divisors is an integer number (8563320).

Almost surely, 2^64435121 is an apocalyptic number.

It is an amenable number.

64435121 is a deficient number, since it is larger than the sum of its proper divisors (4071439).

64435121 is a wasteful number, since it uses less digits than its factorization.

64435121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52935.

The product of its digits is 2880, while the sum is 26.

The square root of 64435121 is about 8027.1489957519. The cubic root of 64435121 is about 400.9044554428.

Adding to 64435121 its reverse (12153446), we get a palindrome (76588567).

The spelling of 64435121 in words is "sixty-four million, four hundred thirty-five thousand, one hundred twenty-one".