595978 has 4 divisors (see below), whose sum is σ = 893970. Its totient is φ = 297988.

The previous prime is 595967. The next prime is 595981. The reversal of 595978 is 879595.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879595 = 5 ⋅175919.

It can be written as a sum of positive squares in only one way, i.e., 368449 + 227529 = 607^2 + 477^2 .

It is an unprimeable number.

595978 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, 148993 + ... + 148996.

2⁵⁹⁵⁹⁷⁸ is an apocalyptic number.

595978 is a deficient number, since it is larger than the sum of its proper divisors (297992).

595978 is a wasteful number, since it uses less digits than its factorization.

595978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297991.

The product of its digits is 113400, while the sum is 43.

The square root of 595978 is about 771.9961139799. The cubic root of 595978 is about 84.1543835074.

It can be divided in two parts, 59597 and 8, that multiplied together give a triangular number (476776 = T₉₇₆).

The spelling of 595978 in words is "five hundred ninety-five thousand, nine hundred seventy-eight".