488640577 has 4 divisors (see below), whose sum is σ = 488685700. Its totient is φ = 488595456.

The previous prime is 488640563. The next prime is 488640599. The reversal of 488640577 is 775046884.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 341843121 + 146797456 = 18489^2 + 12116^2 .

It is a 3-Lehmer number, since φ(488640577) divides (488640577-1)³.

It is a cyclic number.

It is not a de Polignac number, because 488640577 - 2¹¹ = 488638529 is a prime.

It is a super-2 number, since 2×488640577² = 477539226981785858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 488640577.

It is not an unprimeable number, because it can be changed into a prime (488640547) 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, 4513 + ... + 31585.

It is an arithmetic number, because the mean of its divisors is an integer number (122171425).

Almost surely, 2^488640577 is an apocalyptic number.

488640577 is the 18049-th pentagonal number.

It is an amenable number.

488640577 is a deficient number, since it is larger than the sum of its proper divisors (45123).

488640577 is a wasteful number, since it uses less digits than its factorization.

488640577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45122.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 488640577 is about 22105.2160586591. The cubic root of 488640577 is about 787.6437709120.

The spelling of 488640577 in words is "four hundred eighty-eight million, six hundred forty thousand, five hundred seventy-seven".