64426415 has 8 divisors (see below), whose sum is σ = 77824608. Its totient is φ = 51199200.

The previous prime is 64426409. The next prime is 64426423. The reversal of 64426415 is 51462446.

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

It is not a de Polignac number, because 64426415 - 2¹⁸ = 64164271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41912 + ... + 43421.

It is an arithmetic number, because the mean of its divisors is an integer number (9728076).

Almost surely, 2^64426415 is an apocalyptic number.

64426415 is a deficient number, since it is larger than the sum of its proper divisors (13398193).

64426415 is a wasteful number, since it uses less digits than its factorization.

64426415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85489.

The product of its digits is 23040, while the sum is 32.

The square root of 64426415 is about 8026.6066927438. The cubic root of 64426415 is about 400.8863988750.

The spelling of 64426415 in words is "sixty-four million, four hundred twenty-six thousand, four hundred fifteen".