610978 has 4 divisors (see below), whose sum is σ = 916470. Its totient is φ = 305488.

The previous prime is 610969. The next prime is 610993. The reversal of 610978 is 879016.

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., 405769 + 205209 = 637^2 + 453^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152743 + ... + 152746.

2⁶¹⁰⁹⁷⁸ is an apocalyptic number.

610978 is a deficient number, since it is larger than the sum of its proper divisors (305492).

610978 is a wasteful number, since it uses less digits than its factorization.

610978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305491.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 610978 is about 781.6508171812. The cubic root of 610978 is about 84.8545609775.

The spelling of 610978 in words is "six hundred ten thousand, nine hundred seventy-eight".