77000648 has 8 divisors (see below), whose sum is σ = 144376230. Its totient is φ = 38500320.

The previous prime is 77000647. The next prime is 77000653. The reversal of 77000648 is 84600077.

It can be written as a sum of positive squares in only one way, i.e., 74684164 + 2316484 = 8642^2 + 1522^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (77000641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4812533 + ... + 4812548.

Almost surely, 2^77000648 is an apocalyptic number.

It is an amenable number.

77000648 is a deficient number, since it is larger than the sum of its proper divisors (67375582).

77000648 is a wasteful number, since it uses less digits than its factorization.

77000648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9625087 (or 9625083 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 77000648 is about 8775.0013105412. The cubic root of 77000648 is about 425.4332799280.

The spelling of 77000648 in words is "seventy-seven million, six hundred forty-eight", and thus it is an aban number.