77480930 has 8 divisors (see below), whose sum is σ = 139465692. Its totient is φ = 30992368.

The previous prime is 77480929. The next prime is 77480987. The reversal of 77480930 is 3908477.

It can be written as a sum of positive squares in 2 ways, for example, as 73290721 + 4190209 = 8561^2 + 2047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 in 3 ways as a sum of consecutive naturals, for example, 3874037 + ... + 3874056.

Almost surely, 2^77480930 is an apocalyptic number.

77480930 is a deficient number, since it is larger than the sum of its proper divisors (61984762).

77480930 is a wasteful number, since it uses less digits than its factorization.

77480930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7748100.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 77480930 is about 8802.3252609751. The cubic root of 77480930 is about 426.3159763487.

The spelling of 77480930 in words is "seventy-seven million, four hundred eighty thousand, nine hundred thirty".