77039648 has 48 divisors (see below), whose sum is σ = 183544704. Its totient is φ = 31073280.

The previous prime is 77039593. The next prime is 77039657. The reversal of 77039648 is 84693077.

It is a junction number, because it is equal to n+sod(n) for n = 77039599 and 77039608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6308 + ... + 13923.

It is an arithmetic number, because the mean of its divisors is an integer number (3823848).

Almost surely, 2^77039648 is an apocalyptic number.

It is an amenable number.

77039648 is an abundant number, since it is smaller than the sum of its proper divisors (106505056).

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

77039648 is a wasteful number, since it uses less digits than its factorization.

77039648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20265 (or 20257 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 77039648 is about 8777.2232511199. The cubic root of 77039648 is about 425.5050935986.

The spelling of 77039648 in words is "seventy-seven million, thirty-nine thousand, six hundred forty-eight".