64426705 has 16 divisors (see below), whose sum is σ = 88519680. Its totient is φ = 44096832.

The previous prime is 64426699. The next prime is 64426723. The reversal of 64426705 is 50762446.

It is a cyclic number.

It is not a de Polignac number, because 64426705 - 2⁵ = 64426673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22336 + ... + 25054.

It is an arithmetic number, because the mean of its divisors is an integer number (5532480).

Almost surely, 2^64426705 is an apocalyptic number.

It is an amenable number.

64426705 is a deficient number, since it is larger than the sum of its proper divisors (24092975).

64426705 is a wasteful number, since it uses less digits than its factorization.

64426705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 64426705 is about 8026.6247576425. The cubic root of 64426705 is about 400.8870003720.

The spelling of 64426705 in words is "sixty-four million, four hundred twenty-six thousand, seven hundred five".