780770490 has 16 divisors (see below), whose sum is σ = 1873849248. Its totient is φ = 208205456.

The previous prime is 780770447. The next prime is 780770513. The reversal of 780770490 is 94077087.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13012812 + ... + 13012871.

It is an arithmetic number, because the mean of its divisors is an integer number (117115578).

Almost surely, 2^780770490 is an apocalyptic number.

780770490 is an abundant number, since it is smaller than the sum of its proper divisors (1093078758).

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

780770490 is a wasteful number, since it uses less digits than its factorization.

780770490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26025693.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 780770490 is about 27942.2706665010. The cubic root of 780770490 is about 920.8194062352.

The spelling of 780770490 in words is "seven hundred eighty million, seven hundred seventy thousand, four hundred ninety".