77746148 has 6 divisors (see below), whose sum is σ = 136055766. Its totient is φ = 38873072.

The previous prime is 77746121. The next prime is 77746169. The reversal of 77746148 is 84164777.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75030244 + 2715904 = 8662^2 + 1648^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77746099 and 77746108.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9718265 + ... + 9718272.

It is an arithmetic number, because the mean of its divisors is an integer number (22675961).

Almost surely, 2^77746148 is an apocalyptic number.

It is an amenable number.

77746148 is a deficient number, since it is larger than the sum of its proper divisors (58309618).

77746148 is a wasteful number, since it uses less digits than its factorization.

77746148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19436541 (or 19436539 counting only the distinct ones).

The product of its digits is 263424, while the sum is 44.

The square root of 77746148 is about 8817.3776146879. The cubic root of 77746148 is about 426.8018503392.

The spelling of 77746148 in words is "seventy-seven million, seven hundred forty-six thousand, one hundred forty-eight".