64894911 has 16 divisors (see below), whose sum is σ = 88649088. Its totient is φ = 42213600.

The previous prime is 64894909. The next prime is 64894957. The reversal of 64894911 is 11949846.

It is not a de Polignac number, because 64894911 - 2¹ = 64894909 is a prime.

It is a super-2 number, since 2×64894911² = 8422698947395842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64894981) 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, 22620 + ... + 25326.

It is an arithmetic number, because the mean of its divisors is an integer number (5540568).

Almost surely, 2^64894911 is an apocalyptic number.

64894911 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

64894911 is a deficient number, since it is larger than the sum of its proper divisors (23754177).

64894911 is a wasteful number, since it uses less digits than its factorization.

64894911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902.

The product of its digits is 62208, while the sum is 42.

The square root of 64894911 is about 8055.7377688204. The cubic root of 64894911 is about 401.8557748511.

It can be divided in two parts, 648 and 94911, that added together give a palindrome (95559).

The spelling of 64894911 in words is "sixty-four million, eight hundred ninety-four thousand, nine hundred eleven".