587978 has 4 divisors (see below), whose sum is σ = 881970. Its totient is φ = 293988.

The previous prime is 587971. The next prime is 587987. The reversal of 587978 is 879785.

587978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 310249 + 277729 = 557^2 + 527^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 587978.

It is not an unprimeable number, because it can be changed into a prime (587971) by changing a digit.

587978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 146993 + ... + 146996.

2⁵⁸⁷⁹⁷⁸ is an apocalyptic number.

587978 is a deficient number, since it is larger than the sum of its proper divisors (293992).

587978 is a wasteful number, since it uses less digits than its factorization.

587978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293991.

The product of its digits is 141120, while the sum is 44.

The square root of 587978 is about 766.7972352584. The cubic root of 587978 is about 83.7761424292.

The spelling of 587978 in words is "five hundred eighty-seven thousand, nine hundred seventy-eight".