2078077646 has 16 divisors (see below), whose sum is σ = 3321851904. Its totient is φ = 972716184.

The previous prime is 2078077627. The next prime is 2078077649. The reversal of 2078077646 is 6467708702.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2078077646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078077649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478430 + ... + 482753.

It is an arithmetic number, because the mean of its divisors is an integer number (207615744).

Almost surely, 2^2078077646 is an apocalyptic number.

2078077646 is a deficient number, since it is larger than the sum of its proper divisors (1243774258).

2078077646 is a wasteful number, since it uses less digits than its factorization.

2078077646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961255.

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 2078077646 is about 45585.9369323479. The cubic root of 2078077646 is about 1276.1074875140.

The spelling of 2078077646 in words is "two billion, seventy-eight million, seventy-seven thousand, six hundred forty-six".