77648145 has 8 divisors (see below), whose sum is σ = 124237056. Its totient is φ = 41412336.

The previous prime is 77648119. The next prime is 77648159. The reversal of 77648145 is 54184677.

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

It is not a de Polignac number, because 77648145 - 2⁵ = 77648113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77648097 and 77648106.

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, 2588257 + ... + 2588286.

It is an arithmetic number, because the mean of its divisors is an integer number (15529632).

Almost surely, 2^77648145 is an apocalyptic number.

It is an amenable number.

77648145 is a deficient number, since it is larger than the sum of its proper divisors (46588911).

77648145 is a wasteful number, since it uses less digits than its factorization.

77648145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176551.

The product of its digits is 188160, while the sum is 42.

The square root of 77648145 is about 8811.8184842857. The cubic root of 77648145 is about 426.6224397381.

The spelling of 77648145 in words is "seventy-seven million, six hundred forty-eight thousand, one hundred forty-five".