776026980 has 60 divisors (see below), whose sum is σ = 2434430460. Its totient is φ = 206940096.

The previous prime is 776026961. The next prime is 776026981. The reversal of 776026980 is 89620677.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 258373476 + 517653504 = 16074^2 + 22752^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is not an unprimeable number, because it can be changed into a prime (776026981) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 237895 + ... + 241134.

It is an arithmetic number, because the mean of its divisors is an integer number (40573841).

Almost surely, 2^776026980 is an apocalyptic number.

It is an amenable number.

776026980 is an abundant number, since it is smaller than the sum of its proper divisors (1658403480).

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

776026980 is a wasteful number, since it uses less digits than its factorization.

776026980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479050 (or 479039 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 776026980 is about 27857.2608129371. The cubic root of 776026980 is about 918.9508282347.

The spelling of 776026980 in words is "seven hundred seventy-six million, twenty-six thousand, nine hundred eighty".