64351449 has 16 divisors (see below), whose sum is σ = 96322240. Its totient is φ = 42456960.

The previous prime is 64351439. The next prime is 64351453. The reversal of 64351449 is 94415346.

64351449 is a `hidden beast` number, since 643 + 5 + 1 + 4 + 4 + 9 = 666.

It is not a de Polignac number, because 64351449 - 2⁴ = 64351433 is a prime.

It is a super-2 number, since 2×64351449² = 8282217976799202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64351439) 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 15 ways as a sum of consecutive naturals, for example, 9667 + ... + 14904.

It is an arithmetic number, because the mean of its divisors is an integer number (6020140).

Almost surely, 2^64351449 is an apocalyptic number.

It is an amenable number.

64351449 is a deficient number, since it is larger than the sum of its proper divisors (31970791).

64351449 is a wasteful number, since it uses less digits than its factorization.

64351449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24677 (or 24671 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 64351449 is about 8021.9354896434. The cubic root of 64351449 is about 400.7308492518.

The spelling of 64351449 in words is "sixty-four million, three hundred fifty-one thousand, four hundred forty-nine".