64078776 has 40 divisors (see below), whose sum is σ = 179481720. Its totient is φ = 21359376.

The previous prime is 64078771. The next prime is 64078793. The reversal of 64078776 is 67787046.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64078771) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 48796 + ... + 50091.

It is an arithmetic number, because the mean of its divisors is an integer number (4487043).

Almost surely, 2^64078776 is an apocalyptic number.

It is an amenable number.

64078776 is an abundant number, since it is smaller than the sum of its proper divisors (115402944).

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

64078776 is a wasteful number, since it uses less digits than its factorization.

64078776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98905 (or 98892 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 64078776 is about 8004.9219858784. The cubic root of 64078776 is about 400.1640493770.

The spelling of 64078776 in words is "sixty-four million, seventy-eight thousand, seven hundred seventy-six".