64010643 has 4 divisors (see below), whose sum is σ = 85347528. Its totient is φ = 42673760.

The previous prime is 64010623. The next prime is 64010659. The reversal of 64010643 is 34601046.

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

It is a cyclic number.

It is not a de Polignac number, because 64010643 - 2⁹ = 64010131 is a prime.

It is a super-3 number, since 3×64010643³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (64010603) 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, 10668438 + ... + 10668443.

It is an arithmetic number, because the mean of its divisors is an integer number (21336882).

Almost surely, 2^64010643 is an apocalyptic number.

64010643 is a deficient number, since it is larger than the sum of its proper divisors (21336885).

64010643 is a wasteful number, since it uses less digits than its factorization.

64010643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21336884.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 64010643 is about 8000.6651598476. The cubic root of 64010643 is about 400.0221716877.

Adding to 64010643 its reverse (34601046), we get a palindrome (98611689).

The spelling of 64010643 in words is "sixty-four million, ten thousand, six hundred forty-three".