64251011 has 4 divisors (see below), whose sum is σ = 70092024. Its totient is φ = 58410000.

The previous prime is 64250947. The next prime is 64251071. The reversal of 64251011 is 11015246.

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

It is not a de Polignac number, because 64251011 - 2⁶ = 64250947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64251071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2920490 + ... + 2920511.

It is an arithmetic number, because the mean of its divisors is an integer number (17523006).

Almost surely, 2^64251011 is an apocalyptic number.

64251011 is a deficient number, since it is larger than the sum of its proper divisors (5841013).

64251011 is a wasteful number, since it uses less digits than its factorization.

64251011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5841012.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 64251011 is about 8015.6728351399. The cubic root of 64251011 is about 400.5222574046.

Adding to 64251011 its reverse (11015246), we get a palindrome (75266257).

The spelling of 64251011 in words is "sixty-four million, two hundred fifty-one thousand, eleven".