64849451 has 4 divisors (see below), whose sum is σ = 68262600. Its totient is φ = 61436304.

The previous prime is 64849429. The next prime is 64849453. The reversal of 64849451 is 15494846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15494846 = 2 ⋅7747423.

It is a cyclic number.

It is not a de Polignac number, because 64849451 - 2¹⁸ = 64587307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64849399 and 64849408.

It is not an unprimeable number, because it can be changed into a prime (64849453) 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, 1706546 + ... + 1706583.

It is an arithmetic number, because the mean of its divisors is an integer number (17065650).

Almost surely, 2^64849451 is an apocalyptic number.

64849451 is a deficient number, since it is larger than the sum of its proper divisors (3413149).

64849451 is a wasteful number, since it uses less digits than its factorization.

64849451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413148.

The product of its digits is 138240, while the sum is 41.

The square root of 64849451 is about 8052.9156831548. The cubic root of 64849451 is about 401.7619173068.

The spelling of 64849451 in words is "sixty-four million, eight hundred forty-nine thousand, four hundred fifty-one".