64840296 has 16 divisors (see below), whose sum is σ = 162100800. Its totient is φ = 21613424.

The previous prime is 64840291. The next prime is 64840297. The reversal of 64840296 is 69204846.

It is not an unprimeable number, because it can be changed into a prime (64840291) 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, 1350816 + ... + 1350863.

It is an arithmetic number, because the mean of its divisors is an integer number (10131300).

Almost surely, 2^64840296 is an apocalyptic number.

It is an amenable number.

64840296 is an abundant number, since it is smaller than the sum of its proper divisors (97260504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64840296 is a wasteful number, since it uses less digits than its factorization.

64840296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701688 (or 2701684 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 64840296 is about 8052.3472354339. The cubic root of 64840296 is about 401.7430104212.

The spelling of 64840296 in words is "sixty-four million, eight hundred forty thousand, two hundred ninety-six".