2782278064 has 10 divisors (see below), whose sum is σ = 5390663780. Its totient is φ = 1391139024.

The previous prime is 2782278061. The next prime is 2782278073. The reversal of 2782278064 is 4608722872.

It is not an unprimeable number, because it can be changed into a prime (2782278061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86946174 + ... + 86946205.

It is an arithmetic number, because the mean of its divisors is an integer number (539066378).

Almost surely, 2^2782278064 is an apocalyptic number.

It is an amenable number.

2782278064 is a deficient number, since it is larger than the sum of its proper divisors (2608385716).

2782278064 is a wasteful number, since it uses less digits than its factorization.

2782278064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173892387 (or 173892381 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The square root of 2782278064 is about 52747.3038552683. The cubic root of 2782278064 is about 1406.4798369250.

The spelling of 2782278064 in words is "two billion, seven hundred eighty-two million, two hundred seventy-eight thousand, sixty-four".