780494 has 16 divisors (see below), whose sum is σ = 1375920. Its totient is φ = 327360.

The previous prime is 780469. The next prime is 780499. The reversal of 780494 is 494087.

780494 = T₃₄₀ + T₃₄₁ + ... + T₃₅₂.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 780494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780499) 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, 1079 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (85995).

2⁷⁸⁰⁴⁹⁴ is an apocalyptic number.

780494 is a deficient number, since it is larger than the sum of its proper divisors (595426).

780494 is a wasteful number, since it uses less digits than its factorization.

780494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 780494 is about 883.4557147928. The cubic root of 780494 is about 92.0710698482.

The spelling of 780494 in words is "seven hundred eighty thousand, four hundred ninety-four".