64436051 has 4 divisors (see below), whose sum is σ = 66007704. Its totient is φ = 62864400.

The previous prime is 64436023. The next prime is 64436077. The reversal of 64436051 is 15063446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64436051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64436651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785765 + ... + 785846.

It is an arithmetic number, because the mean of its divisors is an integer number (16501926).

Almost surely, 2^64436051 is an apocalyptic number.

64436051 is a deficient number, since it is larger than the sum of its proper divisors (1571653).

64436051 is a wasteful number, since it uses less digits than its factorization.

64436051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571652.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 64436051 is about 8027.2069239556. The cubic root of 64436051 is about 400.9063842012.

Adding to 64436051 its reverse (15063446), we get a palindrome (79499497).

The spelling of 64436051 in words is "sixty-four million, four hundred thirty-six thousand, fifty-one".