1077978 has 16 divisors (see below), whose sum is σ = 2352096. Its totient is φ = 326640.

The previous prime is 1077977. The next prime is 1077997. The reversal of 1077978 is 8797701.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1077971) 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, 8101 + ... + 8232.

It is an arithmetic number, because the mean of its divisors is an integer number (147006).

2^1077978 is an apocalyptic number.

1077978 is an abundant number, since it is smaller than the sum of its proper divisors (1274118).

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

1077978 is a wasteful number, since it uses less digits than its factorization.

1077978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16349.

The product of its (nonzero) digits is 24696, while the sum is 39.

The square root of 1077978 is about 1038.2571935701. The cubic root of 1077978 is about 102.5344877008.

The spelling of 1077978 in words is "one million, seventy-seven thousand, nine hundred seventy-eight".