77948548 has 12 divisors (see below), whose sum is σ = 136877580. Its totient is φ = 38840672.

The previous prime is 77948509. The next prime is 77948567. The reversal of 77948548 is 84584977.

It can be written as a sum of positive squares in 2 ways, for example, as 70593604 + 7354944 = 8402^2 + 2712^2 .

It is a super-2 number, since 2×77948548² = 12151952270616608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77948495 and 77948504.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 32083 + ... + 34426.

It is an arithmetic number, because the mean of its divisors is an integer number (11406465).

Almost surely, 2^77948548 is an apocalyptic number.

It is an amenable number.

77948548 is a deficient number, since it is larger than the sum of its proper divisors (58929032).

77948548 is a wasteful number, since it uses less digits than its factorization.

77948548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66806 (or 66804 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The square root of 77948548 is about 8828.8474899049. The cubic root of 77948548 is about 427.1719001399.

The spelling of 77948548 in words is "seventy-seven million, nine hundred forty-eight thousand, five hundred forty-eight".