64780854 has 8 divisors (see below), whose sum is σ = 129561720. Its totient is φ = 21593616.

The previous prime is 64780847. The next prime is 64780873. The reversal of 64780854 is 45808746.

It is a sphenic number, since it is the product of 3 distinct primes.

64780854 is an admirable number.

It is a super-4 number, since 4×64780854⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5398399 + ... + 5398410.

It is an arithmetic number, because the mean of its divisors is an integer number (16195215).

Almost surely, 2^64780854 is an apocalyptic number.

64780854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64780854 is a wasteful number, since it uses less digits than its factorization.

64780854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10796814.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 64780854 is about 8048.6554156579. The cubic root of 64780854 is about 401.6202076240.

The spelling of 64780854 in words is "sixty-four million, seven hundred eighty thousand, eight hundred fifty-four".