64321438 has 8 divisors (see below), whose sum is σ = 102157632. Its totient is φ = 30268896.

The previous prime is 64321423. The next prime is 64321459. The reversal of 64321438 is 83412346.

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

It is a congruent number.

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, 945870 + ... + 945937.

It is an arithmetic number, because the mean of its divisors is an integer number (12769704).

Almost surely, 2^64321438 is an apocalyptic number.

64321438 is a deficient number, since it is larger than the sum of its proper divisors (37836194).

64321438 is a wasteful number, since it uses less digits than its factorization.

64321438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891826.

The product of its digits is 13824, while the sum is 31.

The square root of 64321438 is about 8020.0647129559. The cubic root of 64321438 is about 400.6685444981.

The spelling of 64321438 in words is "sixty-four million, three hundred twenty-one thousand, four hundred thirty-eight".