634220005477 has 16 divisors (see below), whose sum is σ = 650541660160. Its totient is φ = 618134414832.

The previous prime is 634220005459. The next prime is 634220005519. The reversal of 634220005477 is 774500022436.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 634220005477 - 2¹⁵ = 634219972709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634220005417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2305174 + ... + 2565592.

It is an arithmetic number, because the mean of its divisors is an integer number (40658853760).

Almost surely, 2^634220005477 is an apocalyptic number.

634220005477 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

634220005477 is a deficient number, since it is larger than the sum of its proper divisors (16321654683).

634220005477 is a wasteful number, since it uses less digits than its factorization.

634220005477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260872.

The product of its (nonzero) digits is 282240, while the sum is 40.

The spelling of 634220005477 in words is "six hundred thirty-four billion, two hundred twenty million, five thousand, four hundred seventy-seven".