637622049 has 24 divisors (see below), whose sum is σ = 872756640. Its totient is φ = 414040704.

The previous prime is 637622047. The next prime is 637622071. The reversal of 637622049 is 940226736.

It is not a de Polignac number, because 637622049 - 2¹ = 637622047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 637621998 and 637622016.

It is not an unprimeable number, because it can be changed into a prime (637622047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1521562 + ... + 1521980.

It is an arithmetic number, because the mean of its divisors is an integer number (36364860).

Almost surely, 2^637622049 is an apocalyptic number.

It is an amenable number.

637622049 is a deficient number, since it is larger than the sum of its proper divisors (235134591).

637622049 is a wasteful number, since it uses less digits than its factorization.

637622049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 637622049 is about 25251.1791605857. The cubic root of 637622049 is about 860.7052305237.

The spelling of 637622049 in words is "six hundred thirty-seven million, six hundred twenty-two thousand, forty-nine".