5478620657 has 2 divisors, whose sum is σ = 5478620658. Its totient is φ = 5478620656.

The previous prime is 5478620647. The next prime is 5478620671. The reversal of 5478620657 is 7560268745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3690684001 + 1787936656 = 60751^2 + 42284^2 .

It is a cyclic number.

It is not a de Polignac number, because 5478620657 - 2⁶ = 5478620593 is a prime.

It is a super-2 number, since 2×5478620657² = 60030568606614223298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5478620647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2739310328 + 2739310329.

It is an arithmetic number, because the mean of its divisors is an integer number (2739310329).

Almost surely, 2^5478620657 is an apocalyptic number.

It is an amenable number.

5478620657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5478620657 is an equidigital number, since it uses as much as digits as its factorization.

5478620657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2822400, while the sum is 50.

The square root of 5478620657 is about 74017.7050238657. The cubic root of 5478620657 is about 1762.8840302088.

The spelling of 5478620657 in words is "five billion, four hundred seventy-eight million, six hundred twenty thousand, six hundred fifty-seven".