64405455 has 16 divisors (see below), whose sum is σ = 103148640. Its totient is φ = 34316288.

The previous prime is 64405417. The next prime is 64405457. The reversal of 64405455 is 55450446.

It is a cyclic number.

It is not a de Polignac number, because 64405455 - 2⁹ = 64404943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64405457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27199 + ... + 29471.

It is an arithmetic number, because the mean of its divisors is an integer number (6446790).

Almost surely, 2^64405455 is an apocalyptic number.

64405455 is a deficient number, since it is larger than the sum of its proper divisors (38743185).

64405455 is a wasteful number, since it uses less digits than its factorization.

64405455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170.

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 64405455 is about 8025.3009289372. The cubic root of 64405455 is about 400.8429203820.

The spelling of 64405455 in words is "sixty-four million, four hundred five thousand, four hundred fifty-five".