77265940 has 12 divisors (see below), whose sum is σ = 162258516. Its totient is φ = 30906368.

The previous prime is 77265917. The next prime is 77265943. The reversal of 77265940 is 4956277.

It can be written as a sum of positive squares in 2 ways, for example, as 46949904 + 30316036 = 6852^2 + 5506^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77265893 and 77265902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77265943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1931629 + ... + 1931668.

It is an arithmetic number, because the mean of its divisors is an integer number (13521543).

Almost surely, 2^77265940 is an apocalyptic number.

It is an amenable number.

77265940 is an abundant number, since it is smaller than the sum of its proper divisors (84992576).

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

77265940 is a wasteful number, since it uses less digits than its factorization.

77265940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863306 (or 3863304 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 77265940 is about 8790.1046637682. The cubic root of 77265940 is about 425.9213047196.

The spelling of 77265940 in words is "seventy-seven million, two hundred sixty-five thousand, nine hundred forty".