64136412 has 18 divisors (see below), whose sum is σ = 162122688. Its totient is φ = 21378792.

The previous prime is 64136411. The next prime is 64136417. The reversal of 64136412 is 21463146.

64136412 is a `hidden beast` number, since 6 + 4 + 13 + 641 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×64136412² = 8226958688467488, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64136411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 890748 + ... + 890819.

It is an arithmetic number, because the mean of its divisors is an integer number (9006816).

Almost surely, 2^64136412 is an apocalyptic number.

It is an amenable number.

64136412 is an abundant number, since it is smaller than the sum of its proper divisors (97986276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64136412 is a wasteful number, since it uses less digits than its factorization.

64136412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781577 (or 1781572 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 64136412 is about 8008.5212118093. The cubic root of 64136412 is about 400.2839899932.

Adding to 64136412 its reverse (21463146), we get a palindrome (85599558).

The spelling of 64136412 in words is "sixty-four million, one hundred thirty-six thousand, four hundred twelve".