64426478 has 8 divisors (see below), whose sum is σ = 96674472. Its totient is φ = 32201656.

The previous prime is 64426471. The next prime is 64426507. The reversal of 64426478 is 87462446.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64426471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5801 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (12084309).

Almost surely, 2^64426478 is an apocalyptic number.

64426478 is a deficient number, since it is larger than the sum of its proper divisors (32247994).

64426478 is a wasteful number, since it uses less digits than its factorization.

64426478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11586.

The product of its digits is 258048, while the sum is 41.

The square root of 64426478 is about 8026.6106171908. The cubic root of 64426478 is about 400.8865295452.

The spelling of 64426478 in words is "sixty-four million, four hundred twenty-six thousand, four hundred seventy-eight".