637422034 has 4 divisors (see below), whose sum is σ = 956133054. Its totient is φ = 318711016.

The previous prime is 637421999. The next prime is 637422053. The reversal of 637422034 is 430224736.

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

It can be written as a sum of positive squares in only one way, i.e., 637411009 + 11025 = 25247^2 + 105^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 637421987 and 637422005.

It is an unprimeable number.

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, 159355507 + ... + 159355510.

Almost surely, 2^637422034 is an apocalyptic number.

637422034 is a deficient number, since it is larger than the sum of its proper divisors (318711020).

637422034 is a wasteful number, since it uses less digits than its factorization.

637422034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318711019.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 637422034 is about 25247.2183418293. The cubic root of 637422034 is about 860.6152232009.

The spelling of 637422034 in words is "six hundred thirty-seven million, four hundred twenty-two thousand, thirty-four".