64401335 has 4 divisors (see below), whose sum is σ = 77281608. Its totient is φ = 51521064.

The previous prime is 64401301. The next prime is 64401343. The reversal of 64401335 is 53310446.

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

It is a cyclic number.

It is not a de Polignac number, because 64401335 - 2⁸ = 64401079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6440129 + ... + 6440138.

It is an arithmetic number, because the mean of its divisors is an integer number (19320402).

Almost surely, 2^64401335 is an apocalyptic number.

64401335 is a deficient number, since it is larger than the sum of its proper divisors (12880273).

64401335 is a wasteful number, since it uses less digits than its factorization.

64401335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12880272.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 64401335 is about 8025.0442366382. The cubic root of 64401335 is about 400.8343729277.

The spelling of 64401335 in words is "sixty-four million, four hundred one thousand, three hundred thirty-five".