776634140 has 12 divisors (see below), whose sum is σ = 1630931736. Its totient is φ = 310653648.

The previous prime is 776634121. The next prime is 776634143. The reversal of 776634140 is 41436677.

It is a junction number, because it is equal to n+sod(n) for n = 776634094 and 776634103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776634143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19415834 + ... + 19415873.

It is an arithmetic number, because the mean of its divisors is an integer number (135910978).

Almost surely, 2^776634140 is an apocalyptic number.

It is an amenable number.

776634140 is an abundant number, since it is smaller than the sum of its proper divisors (854297596).

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

776634140 is a wasteful number, since it uses less digits than its factorization.

776634140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38831716 (or 38831714 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 776634140 is about 27868.1563796388. The cubic root of 776634140 is about 919.1904267494.

The spelling of 776634140 in words is "seven hundred seventy-six million, six hundred thirty-four thousand, one hundred forty".