64678416 has 40 divisors (see below), whose sum is σ = 182277024. Its totient is φ = 19599360.

The previous prime is 64678409. The next prime is 64678423. The reversal of 64678416 is 61487646.

64678416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64678409) and next prime (64678423).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60721 + ... + 61776.

Almost surely, 2^64678416 is an apocalyptic number.

64678416 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64678416 is an abundant number, since it is smaller than the sum of its proper divisors (117598608).

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

64678416 is a wasteful number, since it uses less digits than its factorization.

64678416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122519 (or 122513 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 64678416 is about 8042.2892263335. The cubic root of 64678416 is about 401.4084018570.

The spelling of 64678416 in words is "sixty-four million, six hundred seventy-eight thousand, four hundred sixteen".