64678452 has 12 divisors (see below), whose sum is σ = 150916416. Its totient is φ = 21559480.

The previous prime is 64678447. The next prime is 64678457. The reversal of 64678452 is 25487646.

It is an interprime number because it is at equal distance from previous prime (64678447) and next prime (64678457).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64678457) 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, 2694924 + ... + 2694947.

It is an arithmetic number, because the mean of its divisors is an integer number (12576368).

Almost surely, 2^64678452 is an apocalyptic number.

It is an amenable number.

64678452 is an abundant number, since it is smaller than the sum of its proper divisors (86237964).

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

64678452 is a wasteful number, since it uses less digits than its factorization.

64678452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5389878 (or 5389876 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 64678452 is about 8042.2914645019. The cubic root of 64678452 is about 401.4084763316.

The spelling of 64678452 in words is "sixty-four million, six hundred seventy-eight thousand, four hundred fifty-two".