77025812 has 6 divisors (see below), whose sum is σ = 134795178. Its totient is φ = 38512904.

The previous prime is 77025811. The next prime is 77025821. The reversal of 77025812 is 21852077.

It can be written as a sum of positive squares in only one way, i.e., 49505296 + 27520516 = 7036^2 + 5246^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77025811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9628223 + ... + 9628230.

It is an arithmetic number, because the mean of its divisors is an integer number (22465863).

Almost surely, 2^77025812 is an apocalyptic number.

It is an amenable number.

77025812 is a deficient number, since it is larger than the sum of its proper divisors (57769366).

77025812 is a wasteful number, since it uses less digits than its factorization.

77025812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19256457 (or 19256455 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 77025812 is about 8776.4350393540. The cubic root of 77025812 is about 425.4796190924.

Adding to 77025812 its reverse (21852077), we get a palindrome (98877889).

The spelling of 77025812 in words is "seventy-seven million, twenty-five thousand, eight hundred twelve".