64506849 has 8 divisors (see below), whose sum is σ = 93828192. Its totient is φ = 39095040.

The previous prime is 64506839. The next prime is 64506913. The reversal of 64506849 is 94860546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64506849 - 2⁴ = 64506833 is a prime.

It is a super-2 number, since 2×64506849² = 8322267135817602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64506849.

It is not an unprimeable number, because it can be changed into a prime (64506839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977344 + ... + 977409.

It is an arithmetic number, because the mean of its divisors is an integer number (11728524).

Almost surely, 2^64506849 is an apocalyptic number.

It is an amenable number.

64506849 is a deficient number, since it is larger than the sum of its proper divisors (29321343).

64506849 is a wasteful number, since it uses less digits than its factorization.

64506849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954767.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 64506849 is about 8031.6155909007. The cubic root of 64506849 is about 401.0531601175.

The spelling of 64506849 in words is "sixty-four million, five hundred six thousand, eight hundred forty-nine".