77702948 has 12 divisors (see below), whose sum is σ = 140669340. Its totient is φ = 37511712.

The previous prime is 77702927. The next prime is 77702953. The reversal of 77702948 is 84920777.

It can be written as a sum of positive squares in 2 ways, for example, as 65157184 + 12545764 = 8072^2 + 3542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77702899 and 77702908.

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, 334811 + ... + 335042.

It is an arithmetic number, because the mean of its divisors is an integer number (11722445).

Almost surely, 2^77702948 is an apocalyptic number.

It is an amenable number.

77702948 is a deficient number, since it is larger than the sum of its proper divisors (62966392).

77702948 is a wasteful number, since it uses less digits than its factorization.

77702948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669886 (or 669884 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 77702948 is about 8814.9275663502. The cubic root of 77702948 is about 426.7227842312.

The spelling of 77702948 in words is "seventy-seven million, seven hundred two thousand, nine hundred forty-eight".