64616436 has 36 divisors (see below), whose sum is σ = 164009664. Its totient is φ = 21450000.

The previous prime is 64616417. The next prime is 64616441. The reversal of 64616436 is 63461646.

64616436 is a `hidden beast` number, since 6 + 4 + 6 + 1 + 643 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 64616436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5461 + ... + 12611.

It is an arithmetic number, because the mean of its divisors is an integer number (4555824).

Almost surely, 2^64616436 is an apocalyptic number.

It is an amenable number.

64616436 is an abundant number, since it is smaller than the sum of its proper divisors (99393228).

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

64616436 is a wasteful number, since it uses less digits than its factorization.

64616436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7412 (or 7407 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 64616436 is about 8038.4349222968. The cubic root of 64616436 is about 401.2801403976.

The spelling of 64616436 in words is "sixty-four million, six hundred sixteen thousand, four hundred thirty-six".