778052676 has 24 divisors (see below), whose sum is σ = 1817411904. Its totient is φ = 259071520.

The previous prime is 778052659. The next prime is 778052683. The reversal of 778052676 is 676250877.

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, 23160 + ... + 45743.

It is an arithmetic number, because the mean of its divisors is an integer number (75725496).

Almost surely, 2^778052676 is an apocalyptic number.

It is an amenable number.

778052676 is an abundant number, since it is smaller than the sum of its proper divisors (1039359228).

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

778052676 is a wasteful number, since it uses less digits than its factorization.

778052676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69851 (or 69849 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The square root of 778052676 is about 27893.5956090282. The cubic root of 778052676 is about 919.7497255579.

Subtracting from 778052676 its sum of digits (48), we obtain a triangular number (778052628 = T₃₉₄₄₇).

The spelling of 778052676 in words is "seven hundred seventy-eight million, fifty-two thousand, six hundred seventy-six".