4656578977 has 4 divisors (see below), whose sum is σ = 4770154116. Its totient is φ = 4543003840.

The previous prime is 4656578939. The next prime is 4656578999. The reversal of 4656578977 is 7798756564.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1478325601 + 3178253376 = 38449^2 + 56376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4656578977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4656575977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56787508 + ... + 56787589.

It is an arithmetic number, because the mean of its divisors is an integer number (1192538529).

Almost surely, 2^4656578977 is an apocalyptic number.

It is an amenable number.

4656578977 is a deficient number, since it is larger than the sum of its proper divisors (113575139).

4656578977 is a wasteful number, since it uses less digits than its factorization.

4656578977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113575138.

The product of its digits is 88905600, while the sum is 64.

The square root of 4656578977 is about 68239.1308341482. The cubic root of 4656578977 is about 1669.8943336157.

The spelling of 4656578977 in words is "four billion, six hundred fifty-six million, five hundred seventy-eight thousand, nine hundred seventy-seven".