778503960 has 384 divisors, whose sum is σ = 2900439360. Its totient is φ = 186624000.

The previous prime is 778503959. The next prime is 778503983. The reversal of 778503960 is 69305877.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7707910 + ... + 7708010.

Almost surely, 2^778503960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 778503960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450219680).

778503960 is an abundant number, since it is smaller than the sum of its proper divisors (2121935400).

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

778503960 is a wasteful number, since it uses less digits than its factorization.

778503960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 778503960 is about 27901.6838201568. The cubic root of 778503960 is about 919.9275147681.

It can be divided in two parts, 77850 and 3960, that added together give a triangular number (81810 = T₄₀₄).

The spelling of 778503960 in words is "seven hundred seventy-eight million, five hundred three thousand, nine hundred sixty".