64453911 has 16 divisors (see below), whose sum is σ = 87264000. Its totient is φ = 42311808.

The previous prime is 64453903. The next prime is 64453931. The reversal of 64453911 is 11935446.

It is not a de Polignac number, because 64453911 - 2³ = 64453903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64453931) 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, 63375 + ... + 64383.

It is an arithmetic number, because the mean of its divisors is an integer number (5454000).

Almost surely, 2^64453911 is an apocalyptic number.

64453911 is a deficient number, since it is larger than the sum of its proper divisors (22810089).

64453911 is a wasteful number, since it uses less digits than its factorization.

64453911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318.

The product of its digits is 12960, while the sum is 33.

The square root of 64453911 is about 8028.3193135301. The cubic root of 64453911 is about 400.9434210591.

The spelling of 64453911 in words is "sixty-four million, four hundred fifty-three thousand, nine hundred eleven".