780630 has 16 divisors (see below), whose sum is σ = 1873584. Its totient is φ = 208160.

The previous prime is 780613. The next prime is 780631. The reversal of 780630 is 36087.

It is a self number, because there is not a number n which added to its sum of digits gives 780630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780631) 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, 12981 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (117099).

2⁷⁸⁰⁶³⁰ is an apocalyptic number.

780630 is an abundant number, since it is smaller than the sum of its proper divisors (1092954).

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

780630 is a wasteful number, since it uses less digits than its factorization.

780630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 780630 is about 883.5326819083. The cubic root of 780630 is about 92.0764172898.

The spelling of 780630 in words is "seven hundred eighty thousand, six hundred thirty".